1 package SL::Helper::Inventory;
6 use Exporter qw(import);
7 use List::Util qw(min sum);
8 use List::UtilsBy qw(sort_by);
9 use List::MoreUtils qw(any);
12 use SL::Locale::String qw(t8);
13 use SL::MoreCommon qw(listify);
14 use SL::DBUtils qw(selectall_hashref_query selectrow_query);
15 use SL::DB::TransferType;
16 use SL::Helper::Number qw(_round_qty _qty);
19 our @EXPORT_OK = qw(get_stock get_onhand allocate allocate_for_assembly produce_assembly check_constraints);
20 our %EXPORT_TAGS = (ALL => \@EXPORT_OK);
22 sub _get_stock_onhand {
25 my $onhand_mode = !!$params{onhand};
29 'MIN(EXTRACT(epoch FROM inventory.itime)) AS itime',
36 my @ids = map { ref $_ ? $_->id : $_ } listify($params{part});
37 push @where, sprintf "parts_id IN (%s)", join ', ', ("?") x @ids;
42 my @ids = map { ref $_ ? $_->id : $_ } listify($params{bin});
43 push @where, sprintf "bin_id IN (%s)", join ', ', ("?") x @ids;
47 if ($params{warehouse}) {
48 my @ids = map { ref $_ ? $_->id : $_ } listify($params{warehouse});
49 push @where, sprintf "warehouse.id IN (%s)", join ', ', ("?") x @ids;
53 if ($params{chargenumber}) {
54 my @ids = listify($params{chargenumber});
55 push @where, sprintf "chargenumber IN (%s)", join ', ', ("?") x @ids;
60 push @where, sprintf "shippingdate <= ?";
61 push @values, $params{date};
64 if ($params{bestbefore}) {
65 push @where, sprintf "bestbefore >= ?";
66 push @values, $params{bestbefore};
70 if ($params{onhand} && !$params{warehouse}) {
71 push @where, 'NOT warehouse.forreserve';
75 if ($params{onhand} && !$params{reserve_for}) {
76 push @where, 'reserve_for_id IS NULL AND reserve_for_table IS NULL';
79 if ($params{reserve_for}) {
80 my @objects = listify($params{chargenumber});
82 push @tokens, ( "(reserve_for_id = ? AND reserve_for_table = ?)") x @objects;
83 push @values, map { ($_->id, $_->meta->table) } @objects;
84 push @where, '(' . join(' OR ', @tokens) . ')';
89 part => [ qw(parts_id) ],
90 bin => [ qw(bin_id inventory.warehouse_id warehouse.forreserve)],
91 warehouse => [ qw(inventory.warehouse_id warehouse.forreserve) ],
92 chargenumber => [ qw(chargenumber) ],
93 bestbefore => [ qw(bestbefore) ],
94 reserve_for => [ qw(reserve_for_id reserve_for_table) ],
95 for_allocate => [ qw(parts_id bin_id inventory.warehouse_id warehouse.forreserve chargenumber bestbefore reserve_for_id reserve_for_table) ],
99 for (listify($params{by})) {
100 my $selects = $allowed_by{$_} or Carp::croak("unknown option for by: $_");
101 push @selects, @$selects;
102 push @groups, @$selects;
106 my $select = join ',', @selects;
107 my $where = @where ? 'WHERE ' . join ' AND ', @where : '';
108 my $group_by = @groups ? 'GROUP BY ' . join ', ', @groups : '';
111 SELECT $select FROM inventory
112 LEFT JOIN bin ON bin_id = bin.id
113 LEFT JOIN warehouse ON bin.warehouse_id = warehouse.id
118 my $results = selectall_hashref_query($::form, SL::DB->client->dbh, $query, @values);
121 part => 'SL::DB::Manager::Part',
122 bin => 'SL::DB::Manager::Bin',
123 warehouse => 'SL::DB::Manager::Warehouse',
124 reserve_for => undef,
130 warehouse => 'warehouse_id',
133 if ($params{by} && $params{with_objects}) {
134 for my $with_object (listify($params{with_objects})) {
135 Carp::croak("unknown with_object $with_object") if !exists $with_objects{$with_object};
137 if (my $manager = $with_objects{$with_object}) {
138 my $slot = $slots{$with_object};
139 next if !(my @ids = map { $_->{$slot} } @$results);
140 my $objects = $manager->get_all(query => [ id => \@ids ]);
141 my %objects_by_id = map { $_->id => $_ } @$objects;
143 $_->{$with_object} = $objects_by_id{$_->{$slot}} for @$results;
145 # need to fetch all reserve_for_table partitions
153 return $results->[0]{qty};
158 _get_stock_onhand(@_, onhand => 0);
162 _get_stock_onhand(@_, onhand => 1);
168 my $part = $params{part} or Carp::croak('allocate needs a part');
169 my $qty = $params{qty} or Carp::croak('allocate needs a qty');
171 return () if $qty <= 0;
173 my $results = get_stock(part => $part, by => 'for_allocate');
174 my %bin_whitelist = map { (ref $_ ? $_->id : $_) => 1 } grep defined, listify($params{bin});
175 my %wh_whitelist = map { (ref $_ ? $_->id : $_) => 1 } grep defined, listify($params{warehouse});
176 my %chargenumbers = map { (ref $_ ? $_->id : $_) => 1 } grep defined, listify($params{chargenumber});
177 my %reserve_whitelist;
178 if ($params{reserve_for}) {
179 $reserve_whitelist{ $_->meta->table }{ $_->id } = 1 for listify($params{reserve_for});
182 # filter the results. we don't want:
184 # - bins that are reserve but not in the white-list of warehouses or bins
185 # - reservations that are not white-listed
187 my @filtered_results = grep {
188 (!$_->{forreserve} || $bin_whitelist{$_->{bin_id}} || $wh_whitelist{$_->{warehouse_id}})
189 && (!$_->{reserve_for_id} || $reserve_whitelist{ $_->{reserve_for_table} }{ $_->{reserve_for_id} })
192 # sort results so that reserve_for is first, then chargenumbers, then wanted bins, then wanted warehouses
193 my @sorted_results = sort {
194 (!!$b->{reserve_for_id}) <=> (!!$a->{reserve_for_id}) # sort by existing reserve_for_id first.
195 || exists $chargenumbers{$b->{chargenumber}} <=> exists $chargenumbers{$a->{chargenumber}} # then prefer wanted chargenumbers
196 || exists $bin_whitelist{$b->{bin_id}} <=> exists $bin_whitelist{$a->{bin_id}} # then prefer wanted bins
197 || exists $wh_whitelist{$b->{warehouse_id}} <=> exists $wh_whitelist{$a->{warehouse_id}} # then prefer wanted bins
198 || $a->{itime} <=> $b->{itime} # and finally prefer earlier charges
203 for my $chunk (@sorted_results) {
204 my $qty = min($chunk->{qty}, $rest_qty);
206 push @allocations, SL::Helper::Inventory::Allocation->new(
207 parts_id => $chunk->{parts_id},
209 comment => $params{comment},
210 bin_id => $chunk->{bin_id},
211 warehouse_id => $chunk->{warehouse_id},
212 chargenumber => $chunk->{chargenumber},
213 bestbefore => $chunk->{bestbefore},
214 reserve_for_id => $chunk->{reserve_for_id},
215 reserve_for_table => $chunk->{reserve_for_table},
216 for_object_id => undef,
218 $rest_qty -= _round_qty($qty);
220 $rest_qty = _round_qty($rest_qty);
221 last if $rest_qty == 0;
224 die SL::X::Inventory::Allocation->new(
225 error => 'not enough to allocate',
226 msg => t8("can not allocate #1 units of #2, missing #3 units", _qty($qty), $part->displayable_name, _qty($rest_qty)),
229 if ($params{constraints}) {
230 check_constraints($params{constraints},\@allocations);
236 sub allocate_for_assembly {
239 my $part = $params{part} or Carp::croak('allocate needs a part');
240 my $qty = $params{qty} or Carp::croak('allocate needs a qty');
242 Carp::croak('not an assembly') unless $part->is_assembly;
244 my %parts_to_allocate;
246 for my $assembly ($part->assemblies) {
247 next if $assembly->part->dispotype eq 'no_stock';
249 my $tmpqty = $assembly->assembly_part->is_recipe ? $assembly->qty * $qty / $assembly->assembly_part->scalebasis
250 : $assembly->part->unit eq 'Stck' ? ceil($assembly->qty * $qty)
251 : $assembly->qty * $qty;
252 $parts_to_allocate{ $assembly->part->id } //= 0;
253 $parts_to_allocate{ $assembly->part->id } += $tmpqty;
258 for my $part_id (keys %parts_to_allocate) {
259 my $part = SL::DB::Part->load_cached($part_id);
260 push @allocations, allocate(%params, part => $part, qty => $parts_to_allocate{$part_id});
266 sub check_constraints {
267 my ($constraints, $allocations) = @_;
268 if ('CODE' eq ref $constraints) {
269 if (!$constraints->(@$allocations)) {
270 die SL::X::Inventory::Allocation->new(
271 error => 'allocation constraints failure',
272 msg => t8("Allocations didn't pass constraints"),
276 croak 'constraints needs to be a hashref' unless 'HASH' eq ref $constraints;
278 my %supported_constraints = (
280 warehouse_id => 'warehouse_id',
281 chargenumber => 'chargenumber',
284 for (keys %$constraints ) {
285 croak "unsupported constraint '$_'" unless $supported_constraints{$_};
287 my %whitelist = map { (ref $_ ? $_->id : $_) => 1 } listify($constraints->{$_});
288 my $accessor = $supported_constraints{$_};
290 if (any { !$whitelist{$_->$accessor} } @$allocations) {
291 my %error_constraints = (
292 bin_id => t8('Bins'),
293 warehouse_id => t8('Warehouses'),
294 chargenumber => t8('Chargenumbers'),
296 my @allocs = grep { $whitelist{$_->$accessor} } @$allocations;
297 my $needed = sum map { $_->qty } grep { !$whitelist{$_->$accessor} } @$allocations;
298 my $err = t8("Cannot allocate parts.");
299 $err .= ' '.t8('part \'#\'1 in bin \'#2\' only with qty #3 (need additional #4) and chargenumber \'#5\'.',
300 SL::DB::Part->load_cached($_->parts_id)->description,
301 SL::DB::Bin->load_cached($_->bin_id)->full_description,
302 _qty($_->qty), _qty($needed), $_->chargenumber ? $_->chargenumber : '--') for @allocs;
303 die SL::X::Inventory::Allocation->new(
304 error => 'allocation constraints failure',
312 sub produce_assembly {
315 my $part = $params{part} or Carp::croak('produce_assembly needs a part');
316 my $qty = $params{qty} or Carp::croak('produce_assembly needs a qty');
318 my $allocations = $params{allocations};
319 if ($params{auto_allocate}) {
320 Carp::croak("produce_assembly: can't have both allocations and auto_allocate") if $params{allocations};
321 $allocations = [ allocate_for_assembly(part => $part, qty => $qty) ];
323 Carp::croak("produce_assembly: need allocations or auto_allocate to produce something") if !$params{allocations};
324 $allocations = $params{allocations};
327 my $bin = $params{bin} or Carp::croak("need target bin");
328 my $chargenumber = $params{chargenumber};
329 my $bestbefore = $params{bestbefore};
330 my $for_object_id = $params{for_object_id};
331 my $comment = $params{comment} // '';
333 my $production_order_item = $params{production_order_item};
334 my $invoice = $params{invoice};
335 my $project = $params{project};
336 my $reserve_for = $params{reserve_for};
338 my $reserve_for_id = $reserve_for ? $reserve_for->id : undef;
339 my $reserve_for_table = $reserve_for ? $reserve_for->meta->table : undef;
341 my $shippingdate = $params{shippingsdate} // DateTime->now_local;
343 my $trans_id = $params{trans_id};
344 ($trans_id) = selectrow_query($::form, SL::DB->client->dbh, qq|SELECT nextval('id')| ) unless $trans_id;
346 my $trans_type_out = SL::DB::Manager::TransferType->find_by(direction => 'out', description => 'used');
347 my $trans_type_in = SL::DB::Manager::TransferType->find_by(direction => 'in', description => 'assembled');
349 # check whether allocations are sane
350 if (!$params{no_check_allocations} && !$params{auto_allocate}) {
351 my %allocations_by_part = map { $_->parts_id => $_->qty } @$allocations;
352 for my $assembly ($part->assemblies) {
353 $allocations_by_part{ $assembly->parts_id } -= $assembly->qty * $qty; # TODO recipe factor
356 die "allocations are insufficient for production" if any { $_ < 0 } values %allocations_by_part;
360 for my $allocation (@$allocations) {
361 my $oe_id = delete $allocation->{for_object_id};
362 push @transfers, SL::DB::Inventory->new(
363 trans_id => $trans_id,
365 qty => -$allocation->qty,
366 trans_type => $trans_type_out,
367 shippingdate => $shippingdate,
368 employee => SL::DB::Manager::Employee->current,
369 oe_id => $allocation->for_object_id,
373 push @transfers, SL::DB::Inventory->new(
374 trans_id => $trans_id,
375 trans_type => $trans_type_in,
379 warehouse => $bin->warehouse_id,
380 chargenumber => $chargenumber,
381 bestbefore => $bestbefore,
382 reserve_for_id => $reserve_for_id,
383 reserve_for_table => $reserve_for_table,
384 shippingdate => $shippingdate,
388 prod => $production_order_item,
389 employee => SL::DB::Manager::Employee->current,
390 oe_id => $for_object_id,
393 SL::DB->client->with_transaction(sub {
394 $_->save for @transfers;
397 die SL::DB->client->error;
403 package SL::Helper::Inventory::Allocation {
404 my @attributes = qw(parts_id qty bin_id warehouse_id chargenumber bestbefore comment reserve_for_id reserve_for_table for_object_id);
405 my %attributes = map { $_ => 1 } @attributes;
407 for my $name (@attributes) {
409 *{"SL::Helper::Inventory::Allocation::$name"} = sub { $_[0]{$name} };
413 my ($class, %params) = @_;
415 Carp::croak("missing attribute $_") for grep { !exists $params{$_} } @attributes;
416 Carp::croak("unknown attribute $_") for grep { !exists $attributes{$_} } keys %params;
417 Carp::croak("$_ must be set") for grep { !$params{$_} } qw(parts_id qty bin_id);
418 Carp::croak("$_ must be positive") for grep { !($params{$_} > 0) } qw(parts_id qty bin_id);
420 bless { %params }, $class;
430 SL::WH - Warehouse and Inventory API
434 # See description for an intro to the concepts used here.
436 use SL::Helper::Inventory qw(:ALL);
438 # stock, get "what's there" for a part with various conditions:
439 my $qty = get_stock(part => $part); # how much is on stock?
440 my $qty = get_stock(part => $part, date => $date); # how much was on stock at a specific time?
441 my $qty = get_stock(part => $part, bin => $bin); # how is on stock in a specific bin?
442 my $qty = get_stock(part => $part, warehouse => $warehouse); # how is on stock in a specific warehouse?
443 my $qty = get_stock(part => $part, chargenumber => $chargenumber); # how is on stock of a specific chargenumber?
445 # onhand, get "what's available" for a part with various conditions:
446 my $qty = get_onhand(part => $part); # how much is available?
447 my $qty = get_onhand(part => $part, date => $date); # how much was available at a specific time?
448 my $qty = get_onhand(part => $part, bin => $bin); # how much is available in a specific bin?
449 my $qty = get_onhand(part => $part, warehouse => $warehouse); # how much is available in a specific warehouse?
450 my $qty = get_onhand(part => $part, chargenumber => $chargenumber); # how much is availbale of a specific chargenumber?
451 my $qty = get_onhand(part => $part, reserve_for => $order); # how much is available if you include this reservation?
454 my $data = get_onhand(
455 warehouse => $warehouse,
456 by => [ qw(bin part chargenumber reserve_for) ],
457 with_objects => [ qw(bin part) ],
461 my @allocations, allocate(
462 part => $part, # part_id works too
463 qty => $qty, # must be positive
464 chargenumber => $chargenumber, # optional, may be arrayref. if provided these charges will be used first
465 bestbefore => $datetime, # optional, defaults to today. items with bestbefore prior to that date wont be used
466 reserve_for => $object, # optional, may be arrayref. if provided the qtys reserved for these objects will be used first
467 bin => $bin, # optional, may be arrayref. if provided
470 # shortcut to allocate all that is needed for producing an assembly, will use chargenumbers as appropriate
471 my @allocations, allocate_for_assembly(
472 part => $assembly, # part_id works too
473 qty => $qty, # must be positive
476 # create allocation manually, bypassing checks, all of these need to be passed, even undefs
477 my $allocation = SL::Helper::Inventory::Allocation->new(
478 part_id => $part->id,
480 bin_id => $bin_obj->id,
481 warehouse_id => $bin_obj->warehouse_id,
482 chargenumber => '1823772365',
484 reserve_for_id => undef,
485 reserve_for_table => undef,
486 for_object_id => $order->id,
491 part => $part, # target assembly
493 allocations => \@allocations, # allocations to use. alternatively use "auto_allocate => 1,"
496 bin => $bin, # needed unless a global standard target is configured
497 chargenumber => $chargenumber, # optional
498 bestbefore => $datetime, # optional
499 comment => $comment, # optional
501 # links, all optional
502 production_order_item => $item,
503 reserve_for => $object,
508 New functions for the warehouse and inventory api.
510 The WH api currently has three large shortcomings. It is very hard to just get
511 the current stock for an item, it's extremely complicated to use it to produce
512 assemblies while ensuring that no stock ends up negative, and it's very hard to
513 use it to get an overview over the actual contents of the inventory.
515 The first problem has spawned several dozen small functions in the program that
516 try to implement that, and those usually miss some details. They may ignore
517 reservations, or reserve warehouses, or bestbefore times.
519 To get this cleaned up a bit this code introduces two concepts: stock and onhand.
521 Stock is defined as the actual contents of the inventory, everything that is
522 there. Onhand is what is available, which means things that are stocked and not
523 reserved and not expired.
525 The two new functions C<get_stock> and C<get_onhand> encapsulate these principles and
526 allow simple access with some optional filters for chargenumbers or warehouses.
527 Both of them have a batch mode that can be used to get these information to
528 supllement smiple reports.
530 To address the safe assembly creation a new function has been added.
531 C<allocate> will try to find the requested quantity of a part in the inventory
532 and will return allocations of it which can then be used to create the
533 assembly. Allocation will happen with the C<onhand> semantics defined above,
534 meaning that by default no reservations or expired goods will be used. The
535 caller can supply hints of what shold be used and in those cases chargenumber
536 and reservations will be used up as much as possible first. C<allocate> will
537 always try to fulfil the request even beyond those. Should the required amount
538 not be stocked, allocate will throw an exception.
540 C<produce_assembly> has been rewritten to only accept parameters about the
541 target of the production, and requires allocations to complete the request. The
542 allocations can be supplied manually, or can be generated automatically.
543 C<produce_assembly> will check whether enough allocations are given to create
544 the recipe, but will not check whether the allocations are backed. If the
545 allocations are not sufficient or if the auto-allocation fails an exception
546 is returned. If you need to produce something that is not in the inventory, you
547 can bypass those checks by creating the allocations yourself (see
548 L</"ALLOCATION DATA STRUCTURE">).
550 Note: this is only intended to cover the scenarios described above. For other cases:
556 If you need the reserved amount for an order use C<SL::DB::Helper::Reservation>
561 If you need actual inventory objects because of record links, prod_id links or
562 something like that load them directly. And strongly consider redesigning that,
563 because it's really fragile.
567 You need weight or accounting information you're on your own. The inventory api
568 only concerns itself with the raw quantities.
572 If you need the first stock date of parts, or anything related to a specific
573 transfer type or direction, this is not covered yet.
581 =item * get_stock PARAMS
583 Returns for single parts how much actually exists in the inventory.
591 The part. Must be present without C<by>. May be arrayref with C<by>. Can be object or id.
595 If given, will only return stock on these bins. Optional. May be array, May be object or id.
599 If given, will only return stock on these warehouses. Optional. May be array, May be object or id.
603 If given, will return stock as it were on this timestamp. Optional. Must be L<DateTime> object.
607 If given, will only show stock with this chargenumber. Optional. May be array.
611 See L</"STOCK/ONHAND REPORT MODE">
615 See L</"STOCK/ONHAND REPORT MODE">
619 Will return a single qty normally, see L</"STOCK/ONHAND REPORT MODE"> for batch
620 mode when C<by> is given.
622 =item * get_onhand PARAMS
624 Returns for single parts how much is available in the inventory. That excludes:
625 reserved quantities, reserved warehouses and stock with expired bestbefore.
627 It takes all options of L</get_stock> but treats some of the differently and has some additional ones:
633 Usually C<onhand> will not include results from warehouses with the C<reserve>
634 flag. However giving an explicit list of warehouses will include there in the
635 search, as well as all others.
639 =item * reserve_warehouse
645 =item * allocate PARAMS
657 Bin object. Optional.
661 Warehouse object. Optional.
673 Needs to be a rose object, where id and table can be extracted. Optional.
677 Tries to allocate the required quantity using what is currently onhand. If
678 given any of C<bin>, C<warehouse>, C<chargenumber>, C<reserve_for>
681 =item * allocate_for_assembly PARAMS
683 Shortcut to allocate everything for an assembly. Takes the same arguments. Will
684 compute the required amount for each assembly part and allocate all of them.
686 =item * produce_assembly
691 =head1 STOCK/ONHAND REPORT MODE
693 If the special option C<by> is given with an arrayref, the result will instead
694 be an arrayref of partitioned stocks by those fields. Valid partitions are:
700 If this is given, part is optional in the parameters
714 Note: If you want to use the returned data to create allocations you I<need> to
715 enable all of these. To make this easier a special shortcut exists
717 In this mode, C<with_objects> can be used to load C<warehouse>, C<bin>,
718 C<parts>, and the C<reserve_for> objects in one go, just like with Rose. They
719 need to be present in C<by> before that though.
721 =head1 ALLOCATION ALGORITHM
723 When calling allocate, the current onhand (== available stock) of the item will
724 be used to decide which bins/chargenumbers/bestbefore can be used.
726 In general allocate will try to make the request happen, and will use the
727 provided charges up first, and then tap everything else. If you need to only
728 I<exactly> use the provided charges, you'll need to craft the allocations
729 yourself. See L</"ALLOCATION DATA STRUCTURE"> for that.
731 If C<reserve_for> is given, those will be used up first too.
733 If C<reserved_warehouse> is given, those will be used up second.
735 If C<chargenumber> is given, those will be used up next.
737 After that normal quantities will be used.
739 These are tiebreakers and expected to rarely matter in reality. If you need
740 finegrained control over which allocation is used, you may want to get the
741 onhands yourself and select the appropriate ones.
743 Only quantities with C<bestbefore> unset or after the given date will be
744 considered. If more than one charge is eligible, the earlier C<bestbefore>
747 Allocations do NOT have an internal memory and can't react to other allocations
748 of the same part earlier. Never double allocate the same part within a
751 =head1 ALLOCATION DATA STRUCTURE
753 Allocations are instances of the helper class C<SL::Helper::Inventory::Allocation>. They require
754 each of the following attributes to be set at creation time:
770 =item * reserve_for_id
772 =item * reserve_for_table
774 =item * for_object_id
776 If set the allocations will be marked as allocated for the given object.
777 If these allocations are later used to produce an assembly, the resulting
778 consuming transactions will be marked as belonging to the given object.
779 The object may be an order, productionorder or other objects
783 C<chargenumber>, C<bestbefore>, C<reserve_for_id>, C<reserve_for_table> and
784 C<for_object_id> may be C<undef> (but must still be present at creation time).
785 Instances are considered immutable.
790 # whitelist constraints
794 bin_id => \@allowed_bins,
795 chargenumber => \@allowed_chargenumbers,
802 # only allow chargenumbers with specific format
803 all { $_->chargenumber =~ /^ C \d{8} - \a{d2} $/x } @_
806 # and must be all reservations
807 all { $_->reserve_for_id } @_;
811 C<allocation> is "best effort" in nature. It will take the C<bin>,
812 C<chargenumber> etc hints from the parameters, but will try it's bvest to
813 fulfil the request anyway and only bail out if it is absolutely not possible.
815 Sometimes you need to restrict allocations though. For this you can pass
816 additional constraints to C<allocate>. A constraint serves as a whitelist.
817 Every allocation must fulfil every constraint by having that attribute be one
820 In case even that is not enough, you may supply a custom check by passing a
821 function that will be given the allocation objects.
823 Note that both whitelists and constraints do not influence the order of
824 allocations, which is done purely from the initial parameters. They only serve
825 to reject allocations made in good faith which do fulfil required assertions.
827 =head1 ERROR HANDLING
829 C<allocate> and C<produce_assembly> will throw exceptions if the request can
830 not be completed. The usual reason will be insufficient onhand to allocate, or
831 insufficient allocations to process the request.
835 * define and describe error classes
836 * define wrapper classes for stock/onhand batch mode return values
837 * handle extra arguments in produce: shippingdate, project, oe
838 * clean up allocation helper class
839 * with objects for reservations
849 Sven Schöling E<lt>sven.schoeling@opendynamic.deE<gt>