Solution : https://service.sap.com/sap/support/notes/319944 (SAP Service marketplace login required)
Key words :
system generates update modules, requested customer namespace /xxx/, change document objectin, change document objects, change document object, previous customer namespace, customer namespacefunction module, terms update module, function module z_aend1_write_document, change document
Related Notes :
| 454354 | Change document: Function module name is in SAP namespace |
| 16466 | Customer name range for SAP objects |