GM_CODE - BAPI_GOODSMVT_CREATE

You can check table T158G for all GMCODE available.

01          MB01
02          MB31
03          MB1A
04          MB1B
05          MB1C
06          MB11
07          MB04

1. GM_Code 01: Goods receipt for purchase order
2. GM_Code 02: Goods receipt for production order
3. GM_Code 03: Goods issue
4. GM_Code 04: Transfer posting
5. GM_Code 05: Other goods receipts
6. GM_Code 06: Reversal of goods movements
7. GM_Code 07: Subsequent adjustment to a subcontract order

For movement indicator, you can check domain KZBEW.

- Goods movement w/o reference

B - Goods movement for purchase order

F - Goods movement for production order

L - Goods movement for delivery note

K - Goods movement for kanban requirement (WM - internal only)

O - Subsequent adjustment of "material-provided" consumption

W - Subsequent adjustment of proportion/product unit material