Message type: E = Error
Message class:  CNV_PE_TPM - Messages within transport management functions 
Message number: 052
Message text: Transformation rule &1 is not included (namespace)
The transformation rule with &V1& (ID &V2&) is <ZH>not </>included due
to a namespace conflict
Namespace of system: &V3&
Namespace of transformation rule: &V4&
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_PE_TPM052 indicates that a transformation rule specified in the data migration process is not included in the relevant namespace. This error typically occurs during data migration activities, particularly when using the SAP S/4HANA Migration Cockpit or other data transformation tools.
Cause: Missing Transformation Rule: The transformation rule referenced in the error message is not defined in the system or is not available in the specified namespace. Incorrect Namespace: The namespace used in the transformation rule may be incorrect or not properly configured.
Configuration Issues: There may be issues with the configuration of the migration project or the data migration tool being used. Version Mismatch: The transformation rules may not be compatible with the version of the SAP system you are using.
Solution: Check Transformation Rules: Verify that the transformation rule specified in the error message exists in the system. You can do this by navigating to the relevant transaction or tool where transformation
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_PE_TPM051 Transformation rule & 1 is not a value or extended value mapping
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_TPM050 Transformation rule &1 cannot be loaded
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_TPM053 Template include &1 is not found in the system
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_TPM054 Upload stopped because of namespace differencies
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.