2196285 - Table could not be activated in MAIN_SHDRUN/ACT_UPG

During the phase 'Main_SHDRUN' module 'ACT_UPG', the execution of SPDD and Activation fails. In the SAPup_troubleticket.log you can see the following message:

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SAPup broke during phase ACT_UPG in module MAIN_SHDRUN / Shadow System Operations: SPDD and Activation
Error Message: Detected 2 errors summarized in 'ACTUPG.ELG'
Calling '..\SUM\abap\exe/tp' failed with return code 8, check ..\SUM\abap\log\SAPup.ECO for details
tp used shadow connect
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Further checking the file ACTUPG.ELG you can see:

3 EDT014XActivate dependent table "<TABLE>"
1EEDT304 Foreign key "<TABLE>"-"<COLUMN>" (More foreign key fields than check table fields)
2WEDT313 For. "<TABLE>"-"<COLUMN>" ("<COLUMN1>" and "<COLUMN2>" have different data types)
3 EDT015 Dependent table "<TABLE>" was not activated
1EEDO519 "Table" "<TABLE>" could not be activated
1 ETP111 exit code           : "8"

Remark: <TABLE> is the table name and <COLUMN>, <COLUMN1> and <COLUMN2> represent fields of this table.

The target of the upgrade is a NetWeaver 7.4 SR2 based system.

• Windows Server 2008 (R2) and higher;
• MaxDB 7.9.08.27 and higher;
• SAP NetWeaver based systems.
• Software Upgrade Manager with Database Migration Option (SUM-DMO)

During upgrade, Shadow Instance, upgradation, up gradation, up grade, up_gradation, up_grade, during upgrade, during upgradation, After upgrade, Software Updated Manager, max_Db. Max DB, Max-db, MAIN, SHDRUN, MAIN SHDRUN, MAIN-SHDRUN, ACT, UPG, ACT UPG, ACT-UPG, table couldn't be activated, activate, SAPDB, sap_db, SAP DB, Foreign key, DT304, AD285 , KBA , BC-DWB-DIC , ABAP Dictionary and ABAP CDS , BC-UPG-TLS-TLA , Upgrade tools for ABAP , BC-DB-SDB , MaxDB , BC-UPG-RDM , README: Upgrade Supplements , BC-UPG-PRP , Upgrade Preparation , Problem