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Real-Time ATP (Inventory)

Real-time ATP requires trigger consolidation plus online availability calculation. ASAPIO provides the integration pattern and example implementation approach.

Overview: Real-Time Inventory for Materials

ATP is not a static database value. SAP calculates current availability from stock, reservations, inbound supply, and planned dates. Therefore, ATP integration needs:

Detection of all relevant business changes
Transformation into ATP calculation keys
Online ATP calculation and outbound payload generation

Required Configuration

Object Name	Object Type	Configuration
Sales Order	BUS2032	Standard
Purchase Order	BUS2012	Standard
Delivery	LIKP	Standard
Goods Movement	BUS2017	BAdI (MB_DOCUMENT_UPDATE)
Material Reservation	ZBUS2093	User Exit (MBCF0007)

Create Outbound ATP Configuration (SAP GUI)

Create custom extractor function module (example: Z_ACI_EXTRACTOR_ATP) with ASAPIO extractor interface and ATP logic based on BAPI_MATERIAL_AVAILABILITY. The extractor should build payload lines from MATNR/MEINS/WERKS keys and include calculated quantity output.

Transaction SE37: create FM Z_ACI_EXTRACTOR_ATP.
Implement key parsing from BDCP entries and ATP calculation call.
Create outbound object in /ASADEV/ACI_SETTINGS using this extractor.

Set-up Business Object Event Linkage

Implement BAdI /ASADEV/TRIGGER_BADI (method /ASADEV/TRIGGER_IF~SET_BDCP_LINES) to normalize trigger-specific keys into MATNR/MEINS/WERKS ATP keys.

Link relevant BO events in Event Linkage:

Object Name	Object Type	Event	Tables	Transaction
Sales Order	BUS2032	Created, Changed	VBAK, VBAP	VA01, VA02
Purchase Order	BUS2012	Created, Changed	EKKO, EKPO	ME21N, ME22N
Delivery	LIKP	Created, Changed	LIKP, LIPS	VL01, VL02
Goods Movement	BUS2017	Created	MKPF, MSEG	MB11
Material Reservation	ZBUS2093	Created, Changed	RKPF, RESB	MB21, MB22

Via Event Studio

Event Studio can be used for deployment governance and payload validation, while ATP-specific trigger normalization and custom extractor logic remain SAP GUI/ABAP implementation tasks.

Test Example

Typical ATP payload output:

{
  "value": [
    {
      "objectType": "BUS2012",
      "werks": "1200",
      "matnr": "DPC1002",
      "meins": "ST",
      "date": "20221011",
      "quantity": "4216.000"
    }
  ]
}