i got the below error while upgrading fiori frontend server from NW740 to NW750 and update of addon sap fiori for sap sfin 1605.
Conflict check failed, return Code = -2, Reason = “Internal error: OCS_COLLECT_ADDON_TASKS: Wrong AVERS entry for SAPUIFT (no DELT”, check log ‘SPDA_CONFLCHK.LOG’ for details
1EETQ204 Upgrade phase “CONFLICT_CHECK” aborted with severe errors (“20160914224726”)
the SAPUIFT component is Netweaver release independent it has its own release level 100 and latest is SP01 either on NW740 or NW750 is same
we are at SP01 and no update required as part of release or addon upgrade but SUM is still looking for some update of the component looking for a way to skip the upgrade of the addon so that SUM tool ignore the SAPUIFT component.
Finally got to resolve the issue by deselecting the SAPUIFT component from stack calculation using Maintenance Planner and the step completed successfully.
other issues around the same error is ST-PI addon selection in IS_SELECT phase moving back and forward select ST-PI to keep version or selecting to update addon with saint resolution is to click back in SUM and do not select the option to change as default is KEEP VERSION and continue with the SUM
the error for other components as well if you by mistake select upgrade addon with saint in IS_SELECT phase just go back and select KEEP VERSION which is default and continue with the upgrade.