Solution : https://service.sap.com/sap/support/notes/336692 (SAP Service marketplace login required)
Key words :
key field bapi_te_requisition_account-preq_item, additional key words, 'data type' field 2, 'data type' field 3, general bapi guidelines, 'components' tab page, enter component preq_item, component type bnfpo, component type dzebkn, component type ci_cobl 7
Related Notes :
| 783640 | BAPI_TE_REQUISITION_ITEM: Enhancement category not numeric |
| 485557 | BAPI_REQUISITION_CREATE: 'EXTENSIONIN' customer enhancements |