Solution : https://service.sap.com/sap/support/notes/166367 (SAP Service marketplace login required)
Key words :
symptom mass document change select purchase order number, terms afs sd po reason, matchcode id vmva-, m_vmvaa isgenerated view, translatepo number, prerequisites m_vmvaa, generated view, pooled table, upper case, implement note 300500
Related Notes :
| 300500 | MDC selects incorrectly PO number |
| 168887 | AFS V1.0D2 Fixpack #5 including HP/LCP 27-31 |