2552175 - SPAM/SAINT upgrade stuck in DDIC_ACTIVATION or IMPORT_PROPER phase

SPAM/SAINT upgrade stuck in DDIC_ACTIVATION or IMPORT_PROPER phase with below symptoms.

In the log file trans/log/SLOG.<SID>, you find the following messages repeatedly:

=== SLOG1742.<SID> ================
WARNING: System <SID>. Warning.        <date and time> :
WARNING:        Background job RDDIMPDP could not be started or terminated abnormally.
      Please check that the R/3 system is running.
      Please check the system. Use transactions SM21, SM37, SM50.
WARNING:        (This warning is harmless if no further warnings follow.)
================================

In transaction SM37, verifying job RDDIMPDP, the following is displayed:

=== SM37 → RDDIMPDP ===============
Date Time Message text Message class Message no. Message type
<date> <time> Job started 
<date> <time> Step 001 started (program RDDIMPDP, variant , user ID DDIC) 
<date> <time> Program RDDIMPDP is running in client 000 
<date> <time> Background job could not be scheduled (see system log) 
<date> <time> Job cancelled after system exception ERROR_MESSAGE 
================================

Checking the system messages in transaction SM21, the following is logged:

=== SM21 ========================
<time> BTC 013 000 DDIC EF K BP_CHECK_REPORT_VALUES: Invalid program values found. Reason:
<time> BTC 013 000 DDIC ED 1 > Variant IMPACTMRG is invalid
<time> BTC 013 000 DDIC EF N BP_JOB_EDITOR: Job RDDMASGL is invalid. Reason:
<time> BTC 013 000 DDIC EF T > Step 1 contains illegal values
================================

• Note: The missing variant informed in SM21 may vary.

• SPAM
• SAINT

variant missing, long running time, long duration, not moving, hanging , KBA , BC-UPG-OCS , Online Corr. Support (Tools:Supp.-Pack., Addon Install/Upgr) , BC-UPG-OCS-SPA , Support package tools for ABAP , Problem