Solution : https://service.sap.com/sap/support/notes/365289 (SAP Service marketplace login required)
Key words :
system issues error message ck468, purchasing line item added, valid line item found, deleted purchase order item, valid purchasing info record, order price history, release 40b lmeqrf01, attached program corrections, ck468 reason, /3 standard system
Related Notes :
| 713111 | FAQ: pricing in CK11/CK11N |
| 455397 | ME21/ME21N price comes from deleted purchase order |