Solution : https://service.sap.com/sap/support/notes/891596 (SAP Service marketplace login required)
Key words :
Related Notes :
| 800363 | No forwarding with kernel 6.40 or higher |
| 19466 | Downloading SAP kernel patches |
SAP Note 891596 - Upgrade to SAP_BASIS 640 stops in the PRODCHK_UPG phase
Component : Upgrade Tools - Transport Tools