Message type: E = Error
Message class:  LTR2_CM_CHECK_TSD - LTR2 Checks on TSD of Content Module 
Message number: 013
Message text: Keep system tables of class W
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The SAP error message LTR2_CM_CHECK_TSD013 typically relates to the management of system tables in the context of SAP Landscape Transformation (SLT) or Data Replication. This error indicates that there is an issue with the system tables of class W, which are used for various replication and transformation processes.
Cause: The error can occur due to several reasons, including: Inconsistent Data: The system tables may have inconsistent or corrupted data that prevents the replication process from proceeding.
Configuration Issues: There may be misconfigurations in the SLT setup or in the source/target systems that lead to this error. Missing Authorizations: The user executing the operation may not have the necessary authorizations to access or modify the system tables. Database Issues: There could be underlying database issues, such as locks or performance problems, affecting the system tables.
Solution: To resolve the error, you can follow these steps: Check System Tables: Use transaction codes like SE11 or SE16 to inspect the system tables
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