Solution : https://service.sap.com/sap/support/notes/1589409 (SAP Service marketplace login required)
Key words :
update tool sapehpi/sum asks, application enhancement package based thereon, choose 1x 'back' button, component bc-upg-addon, -called attribute change package, installation/delta upgrade note, compatible add-ons' documentation, sap enhancement package installer, target release enhancement package 2, target enhancement package
Related Notes :
| 1262124 | Vendor key handling in ERP Enhancement Packages 3 and 4 |