--- id: object/codeunit/99000781 type: object title: Codeunit 99000781 "Mfg. Calculate BOM Tree" summary: Codeunit 99000781 "Mfg. Calculate BOM Tree" in Base Application (Microsoft.Inventory.BOM.Tree). 1 public procedures, 17 events, 4 event subscribers. Introduced in BC27, still in BC30, changed in BC28, BC30. tier: official language: en tags: - codeunit - base application versions: introduced: "27" last_changed: "30" deprecated: null review: state: derived by: null at: null flags: [] generated: at: "2026-10-11T00:31:51.816Z" pipeline: 0.2.0 prompts: {} input_hash: 3222d1e66620e58c824a61c73537cee36f00fcac17a5663d2fd56e7d2fc370d5 evidence: - kind: code url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Manufacturing/Inventory/BOM/MfgCalculateBOMTree.Codeunit.al title: src/Layers/W1/BaseApp/Manufacturing/Inventory/BOM/MfgCalculateBOMTree.Codeunit.al (releases/29.x) date: null commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220 t: null quote: null links: learn: [] objects: [] features: [] topics: [] localizations: [] videos: [] posts: [] guidelines: [] changes: - change/bcapps/12066 object_type: codeunit object_id: 99000781 name: Mfg. Calculate BOM Tree namespace: Microsoft.Inventory.BOM.Tree app: Base Application extends: null first_version: "27" last_version: "30" present_in: - "27" - "28" - "29" - "30" changed_in: - "28" - "30" source_major: "29" obsolete: null countries: [] ms_search_form_ids: [] counts: fields: 0 procedures: 27 events: 17 subscribers: 4 relations: out: 0 referenced_by: 0 pages: 0 extended_by: 0 event_subscribers: 0 calls: 3 called_by: 0 implements: 0 --- # Codeunit 99000781 "Mfg. Calculate BOM Tree" > Codeunit 99000781 "Mfg. Calculate BOM Tree" in Base Application (Microsoft.Inventory.BOM.Tree). 1 public procedures, 17 events, 4 event subscribers. Introduced in BC27, still in BC30, changed in BC28, BC30. Base Application · Microsoft.Inventory.BOM.Tree · BC27-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Manufacturing/Inventory/BOM/MfgCalculateBOMTree.Codeunit.al) · facts from BC29 ## Events published - `OnBeforeFilterByQuantityPer(var ProductionBOMLine: Record Microsoft.Manufacturing.ProductionBOM."Production BOM Line"; var IsHandled: Boolean; BOMBuffer: Record "BOM Buffer")` (integration) - `OnGenerateProdCompSubTreeOnBeforeExitForNonProdOrder(ParentItem: Record Item; var BOMBuffer: Record "BOM Buffer"; var FoundSubTree: Boolean)` (integration) - `OnAfterTransferFromProdItem(var BOMBuffer: Record "BOM Buffer"; ProdBOMLine: Record Microsoft.Manufacturing.ProductionBOM."Production BOM Line"; var EntryNo: Integer)` (integration) - `OnGenerateProdCompSubTreeOnAfterGenerateItemSubTree(var ParentBOMBuffer: Record "BOM Buffer"; var BOMBuffer: Record "BOM Buffer")` (integration) - `OnBeforeTransferFromProdBOM(var BOMBuffer: Record "BOM Buffer"; var ProdBOMLine: Record Microsoft.Manufacturing.ProductionBOM."Production BOM Line"; var ParentItem: Record Item; var ParentBOMBuffer: Record "BOM Buffer"; var EntryNo: Integer; TreeType: Enum "BOM Tree Type")` (integration) - `OnAfterTransferFromProdBOM(var BOMBuffer: Record "BOM Buffer"; ProdBOMLine: Record Microsoft.Manufacturing.ProductionBOM."Production BOM Line")` (integration) - `OnAfterGenerateProdCompSubTree(var ParentItem: Record Item; var BOMBuffer: Record "BOM Buffer"; var ParentBOMBuffer: Record "BOM Buffer")` (integration) - `OnGenerateProdCompSubTreeOnAfterProdBOMLineLoop(var ParentBOMBuffer: Record "BOM Buffer"; var BOMBuffer: Record "BOM Buffer")` (integration) - `OnGenerateProdCompSubTreeOnBeforeBOMBufferModify(var BOMBuffer: Record "BOM Buffer"; var ParentBOMBuffer: Record "BOM Buffer"; ParentItem: Record Item)` (integration) - `OnGenerateProdCompSubTreeOnAfterBOMBufferModify(var BOMBuffer: Record "BOM Buffer"; RoutingLine: Record Microsoft.Manufacturing.Routing."Routing Line"; LotSize: Decimal; ParentItem: Record Item; ParentBOMBuffer: Record "BOM Buffer"; TreeType: Enum "BOM Tree Type")` (integration) - `OnBeforeGenerateProdOrderLineSubTree(ProdOrderLine: Record Microsoft.Manufacturing.Document."Prod. Order Line"; var BOMBuffer: Record "BOM Buffer"; var ParentBOMBuffer: Record "BOM Buffer"; var Result: Boolean; var IsHandled: Boolean)` (integration) - `OnBeforeCalcRoutingLineCosts(var RoutingLine: Record Microsoft.Manufacturing.Routing."Routing Line"; var LotSize: Decimal; var ScrapPct: Decimal; ParentItem: Record Item)` (integration) - `OnCalcRoutingLineCostsOnBeforeBOMBufferAdd(RoutingLine: Record Microsoft.Manufacturing.Routing."Routing Line"; LotSize: Decimal; ScrapPct: Decimal; var CapCost: Decimal; var SubcontractedCapCost: Decimal; var CapOverhead: Decimal; var BOMBuffer: Record "BOM Buffer")` (integration) - `OnAfterCalcRoutingLineCosts(RoutingLine: Record Microsoft.Manufacturing.Routing."Routing Line"; LotSize: Decimal; ScrapPercent: Decimal; var CapacityCost: Decimal; var SubcontractedCapacityCost: Decimal; var CapacityOverhead: Decimal; var BOMBuffer: Record "BOM Buffer"; var ParentItem: Record Item)` (integration) - `OnBeforeTransferProdBOMLine(var BOMBuffer: Record "BOM Buffer"; var ProdBOMLine: Record Microsoft.Manufacturing.ProductionBOM."Production BOM Line"; var ParentItem: Record Item; var ParentBOMBuffer: Record "BOM Buffer"; var EntryNo: Integer; TreeType: Option " ",Availability,Cost; var IsHandled: Boolean)` (integration) - `OnGenerateProdCompSubTreeOnBeforeRoutingLineLoop(var RoutingLine: Record Microsoft.Manufacturing.Routing."Routing Line"; var BOMBuffer: Record "BOM Buffer"; var RunIteration: Boolean; ItemFilter: Record Item)` (integration) - `OnAfterTransferFromProdRouting(var BOMBuffer: Record "BOM Buffer"; var RoutingLine: Record Microsoft.Manufacturing.Routing."Routing Line")` (integration) ## Event subscriptions - ProdOrderLineOnGenerateTreeForSource subscribes to Codeunit "Calculate BOM Tree" OnGenerateTreeForSource - OnGenerateItemSubTreeOnSetIsLeaf subscribes to Codeunit "Calculate BOM Tree" OnGenerateItemSubTreeOnSetIsLeaf - OnWriteToDatabaseOnProductionBOM subscribes to Codeunit "BOM Node" OnWriteToDatabaseOnProductionBOM - OnCopyFromItemOnAfterGetParentItem subscribes to Table "BOM Component" OnCopyFromItemOnAfterGetParentItem ## Procedures - `GenerateTreeForProdOrderLine(ProdOrderLine: Record "Prod. Order Line"; var BOMBuffer: Record "BOM Buffer"; TreeType: Enum "BOM Tree Type"; var ItemFilter: Record Item; var EntryNo: Integer; var sender: Codeunit "Calculate BOM Tree")` Plus 5 local procedures. ## Calls From the extracted call graph of BC29 (graphify-al on the snapshot checkout): calls whose target is known from a declared type or an `Object::"Name"` argument. Interface dispatch and calls through events are not counted, so the list is not complete. - [Codeunit 5870 "Calculate BOM Tree"](../codeunit/5870.md) (13 calls: `GenerateProdCompSubTree → (object)`, `GenerateProdCompSubTree → CalcCompDueDate`, `GenerateProdCompSubTree → GenerateItemSubTree`, …) - [Codeunit 5402 "Unit of Measure Management"](../codeunit/5402.md) (3 calls: `GenerateProdCompSubTree → GetQtyPerUnitOfMeasure`, `GenerateProdCompSubTree → QtyRndPrecision`, `GetQtyPerBOMHeaderUnitOfMeasure → GetQtyPerUnitOfMeasure`) - [Codeunit 99000756 "VersionManagement"](../codeunit/99000756.md) (1 call: `GenerateProdCompSubTree → GetBOMVersion`) ## Recent changes - 2026-10-02 [#12066 Bugs/remove asm inv mfg clean27 tags for wave2 2026](../../changes/bcapps/12066.md) (main, BC30, obsoletion) ## Across versions - Present in: BC27-30 - Changed (declaration) in: BC28, BC30 Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10). ## Ask your agent Procedure bodies are not stored here (D10). The call sections above are our own, per object, from the BC29 call graph. For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "codeunit", object_name: "Mfg. Calculate BOM Tree")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.