Solution : https://service.sap.com/sap/support/notes/662889 (SAP Service marketplace login required)
Key words :
system issues error message 5a028, missing table entry, maintain table t777e, recursive check' field, purchasing group, organizational structure, copied directly, purchasing groups, maintained correctly, organizational responsibility
Related Notes :
589242 | EBP 3.5: Purchasing group responsible for position |
110909 | Composite SAP note on generic attributes |