Message type: E = Error
Message class:  LCM_LEGALTRANSACTION - Message Class for LCM Legal Transaction 
Message number: 153
Message text: Cannot link as relationship with &2 results in level &1
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The SAP error message LCM_LEGALTRANSACTION153 typically occurs in the context of legal transaction management within SAP systems, particularly when dealing with relationships between different entities or objects in the system. The error message indicates that there is an issue with linking a relationship due to a level mismatch.
Cause: The error message "Cannot link as relationship with &2 results in level &1" suggests that the system is trying to establish a relationship between two entities (denoted as &1 and &2), but the relationship would result in an invalid hierarchy or level structure. This can happen due to several reasons: Hierarchy Level Mismatch: The entities you are trying to link may not be compatible in terms of their defined levels in the hierarchy. For example, you might be trying to link a child entity to a parent entity that is not at the correct level. Incorrect Configuration: The configuration settings for the legal transaction management
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