Solution : https://service.sap.com/sap/support/notes/352320 (SAP Service marketplace login required)
Key words :
info record purchase order text, additional key words me21n, material po text, internal header memo, purchase order, header text, delivery text, purchase requisition, transaction me22n, longer exist
Related Notes :
| 367224 | Texts disappear from purchase order |
| 362300 | ME22N: Header texts are deleted |
| 353584 | ME51N, ME52N: problems with texts in PReq |