1790486 - SAP_ABA is in an undefined state that is not safe to be upgraded

You are performing system update or upgrade on an ABAP system via SUM. The following error occurred in phase "PREP_INIT/VALCHK_INI".

Error:
*****************************************

Severe error(s) occurred in phase PREP_INIT/VALCHK_INI!
SAP_ABA is in an undefined state that is not safe to be upgraded !!!
EA-APPL is in an undefined state that is not safe to be upgraded !!!
BBPCRM is in an undefined state that is not safe to be upgraded !!!
BI_CONT is in an undefined state that is not safe to be upgraded !!!
PI_BASIS is in an undefined state that is not safe to be upgraded !!!
....
Reason: Upgrade wasn't completed.

*****************************************

(The component names above are just examples.)

NetWeaver ABAP based systems.

can't, continue, SUM, EHPI, SOLMANup, reset, PREP_INIT, Initialization, PREPARE, VALCHK_INI, maybe upgrade was not reset, Detected invalid (temporary) start release, zurücksetzen, Extraction Phase, VALCHK.LOG, UVERS, ist in einem undefinierten Zustand, Upgradeverzeichnis, Upgradeordner, SAPup broke during phase VALCHK_INI in module, Severe error(s) occurred in phase PREP_INIT/VALCHK_INI!, BSNAGT is in an undefined state, /$tab, /$SYNC, ok-code , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem