Solution : https://service.sap.com/sap/support/notes/211062 (SAP Service marketplace login required)
Key words :
choose 'change'copy field 'grreq', additional key words arun, select check box 'key', grouping release check, group level saving, call transaction 'se11', generates error message, field 'grreq', error occurred, allocation run
Related Notes :
326157 | AFS V1.0D2 Fixpack #8 including HP/LCP 46-58 |
216353 | ARun - customer number is partially missing in log |
211448 | ARun - 'R' and 'F' allocations within one group |