Message type: E = Error
Message class:  U6 - Message Class for BRE 
Message number: 146
Message text: Installation &1 backlog set &2: Update error table INSTSET (for &3)
In the BRE extract table <ZH>INSTSET</>, the update for installation
&V1&, backlog set &V2& contains errors.
The fields with &V3& (ALIENPRO, AEDAT = FINDAT, EXTNUMBER) must be
completed for <ZH>all</> entries for installation &V1&, backlog set &V2&
.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Contact SAP.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message U6146 indicates that there is an issue with the installation backlog set during an update process. This error typically occurs when there is a problem with the update of the installation set in the system. Here’s a breakdown of the cause, potential solutions, and related information for this error:
Cause: Data Inconsistency: There may be inconsistencies in the data related to the installation backlog set. Database Issues: Problems with the database, such as locks or corruption, can lead to update errors.
Configuration Issues: Incorrect configuration settings in the system can cause the update process to fail. Missing Dependencies: Required components or dependencies for the installation set may be missing or not properly configured. Transport Issues: If the installation set is part of a transport request, issues during the transport process can lead to this error.
Solution: Check Logs: Review the system logs (transaction SM21) and the update logs (transaction SM13) for more detailed error
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