Sap Bapi Integration

SAP BAPI Integration — 9 Modules, 29 BAPIs

Prerequisites: SAP RFC connection, ZROUTER_DISPATCH_FM (or direct BAPI), Python 3.8+. Full BAPI tables: reference.md

When to use

• Create/modify materials, orders, FI docs via BAPI
• Map CSV/XLS fields to BAPI parameters
• Debug BAPIRET2 -- the real error message is never in sy-subrc
• Create ZROUTER handler for a new functional module
• Replace batch input/BDC with BAPI (ex: MB01 → BAPI_GOODSMVT_CREATE)

Golden Rule

1. BAPI_<OBJECT>_<ACTION> → call with parameters by VALUE
2. Check BAPIRET2-TYPE       → NEVER trust sy-subrc
3. E or A in TYPE?           → BAPI_TRANSACTION_ROLLBACK
4. Otherwise                 → BAPI_TRANSACTION_COMMIT EXPORTING wait = 'X'

Step by step

1. Discover BAPI

python scripts/sap_router.py route --action CREATE_MATERIAL --module MM
# → "ZROUTER RFC"

# List BAPIs of a module
grep -A1 "CREATE_MATERIAL\|CREATE_PO\|CREATE_ORDER\|POST_DOCUMENT" scripts/xls_to_bapi.py

2. Convert CSV → BAPI payload

# Generate template
python scripts/xls_to_bapi.py template --output tmpl.csv --module MM --action CREATE_MATERIAL

# Convert data
python scripts/xls_to_bapi.py convert --input data.csv --module MM --action CREATE_MATERIAL
# Expected: JSON with BAPI_MATERIAL_SAVEDATA payload

3. Call BAPI (ABAP)

DATA: ls_header TYPE bapimathead, ls_ret TYPE bapiret2, lv_matnr TYPE matnr,
      lt_desc TYPE TABLE OF bapi_makt.

ls_header-material      = 'M-001'.
ls_header-matl_type     = 'FERT'.
ls_header-indust_sector = 'M'.

CALL FUNCTION 'BAPI_MATERIAL_SAVEDATA'
  EXPORTING headdata = ls_header
  IMPORTING return   = ls_ret
            material = lv_matnr
  TABLES    materialdescription = lt_desc.

" Check TYPE, NOT sy-subrc
IF ls_ret-type CA 'EA'.
  CALL FUNCTION 'BAPI_TRANSACTION_ROLLBACK'.
ELSE.
  CALL FUNCTION 'BAPI_TRANSACTION_COMMIT' EXPORTING wait = 'X'.
ENDIF.

4. Verify

python scripts/sap_router.py log-action \
  --action CREATE_MATERIAL --module MM --status OK --details "MATNR: 000000000000001234"
python scripts/memory_manager.py verify --input MEMORY.md

BAPIRET2 — The Debug Key

See reference.md for production-grade BAPIRET2 loop code.

9 Modules — BAPI Quick Index

MM — Materials Management

BAPI_MATERIAL_SAVEDATA (create/change material), BAPI_MATERIAL_GETALL (list), BAPI_PO_CREATE1 (create PO), BAPI_PO_CHANGE (change PO), BAPI_GOODSMVT_CREATE (goods movement). Template: xls_to_bapi.py template --module MM --action CREATE_PO

SD — Sales & Distribution

BAPI_SALESORDER_CREATEFROMDAT2 (create order), BAPI_SALESORDER_CHANGE (change), BAPI_BILLINGDOC_CREATEMULTIPLE (VF01 billing), BAPI_OUTB_DELIVERY_CREATE_SLS (VL01N delivery). Flow: TA (VA01) → LF (VL01N) → F2 (VF01).

FI — Financial Accounting

BAPI_ACC_DOCUMENT_POST (post document), BAPI_ACC_DOCUMENT_REV_POST (reverse), BAPI_GL_GETACCOUNTSALDO (account balance).

QM — Quality Management

CO_QM_INSPECTION_LOT_CREATE (inspection lot), BAPI_INSPOPER_RECORDRESULTS (record results).

PP — Production Planning

BAPI_PRODORD_CREATE (production order), BAPI_PRODORDCONF_CREATE_TT (confirm), CS_BOM_EXPL_MAT_V2 (explode BOM), BAPI_ROUTING_GETDETAIL (routing details).

WM — Warehouse Management

BAPI_GOODSMVT_CREATE (goods movement), L_TO_CREATE_SINGLE (transfer order).

CO — Controlling

BAPI_INTERNALORDER_CREATE (internal order), BAPI_CO_ALLOCACTUALS (allocate costs).

HCM — Human Capital Management

BAPI_EMPLOYEE_GETDATA (employee data), PA_INFOTYPE_INSERT (create infotype -- requires ENQUEUE).

BASIS — System Administration

TR_INSERT_REQUEST_WITH_TASKS (create transport), TR_RELEASE_REQUEST (release), TRINT_INSPECT_OBJECTS (analyze objects).

Pitfalls

• sy-subrc != BAPIRET2-TYPE: BAPI always returns 0, the error is in BAPIRET2. NEVER IF sy-subrc <> 0 to validate BAPI.
  • Cause: BAPIs wrap all errors in BAPIRET2-TYPE. Solution: always check ls_ret-type CA 'EA'.
• COMMIT vs COMMIT WORK: Always use BAPI_TRANSACTION_COMMIT, never COMMIT WORK directly. BAPI commit ensures synchronous update.
  • Cause: COMMIT WORK skips update task processing. Solution: BAPI_TRANSACTION_COMMIT EXPORTING wait = 'X'.
• Parameters by value: BAPIs do not support pass-by-reference. All parameters must be passed by value.
  • Cause: RFC marshalling limitation. Solution: check FM signature in SE37 -- import=by value, changing=by ref (avoid).
• Lock before update: For HCM/PA_INFOTYPE_INSERT always ENQUEUE first. MM uses BAPI_MATERIAL_SAVEDATA which auto-locks.
  • Cause: Infotype requires PA lock. Solution: CALL FUNCTION 'ENQUEUE_EPA' before insert.
• QM uses prefix CO_: QM BAPIs use CO_QM_*, not BAPI_QM_*.
  • Cause: Historical naming from CO module. Solution: search CO_QM_* for quality BAPIs.
• L_TO_CREATE_SINGLE is RFC not BAPI: No BAPIRET2, check specific return structure.
  • Cause: WM transfer order predates BAPI standard. Solution: check LTAP-VSOLA and LTAP-NLPLA fields.
• Implicit commits: Dialog step, RFC calls, CALL TRANSACTION, SUBMIT, WAIT -- all trigger implicit commit. Careful with long SAP LUWs.
  • Cause: SAP kernel auto-commits at dialog boundaries. Solution: batch all BAPIs within one LUW before final commit.
• Implicit rollback: Runtime error (dump), message type A or X, PBO with error -- resets everything.
  • Cause: SAP transaction integrity. Solution: handle exceptions, check message types before calling BAPI.

Verification

# Validate via sap_router
python scripts/sap_router.py log-action --action CREATE_MATERIAL --module MM --status OK

# Check memory
python scripts/memory_manager.py verify --input MEMORY.md

# ABAP: check BAPIRET2 after call
" LOOP AT lt_bapiret INTO ls_ret WHERE type CA 'EA'. → error found
" SE37 → BAPI_MATERIAL_SAVEDATA → Test → execute with test data

Related

• ZROUTER handler: python scripts/template_repo.py resolve --template MM_CREATE_MATERIAL ...
• Field mapping: python scripts/xls_to_bapi.py template --module <MOD> --action <ACT>
• Full BAPI tables and production code: reference.md