How To Fix CM_MDG_CDS_ASSEMBLER001 - Multiple reuse area for one entity not supported.

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_MDG_CDS_ASSEMBLER -

• Message number: 001

• Message text: Multiple reuse area for one entity not supported.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_MDG_CDS_ASSEMBLER001 - Multiple reuse area for one entity not supported. ?

  The SAP error message CM_MDG_CDS_ASSEMBLER001 indicates that there is an issue with the configuration of the Core Data Services (CDS) views in the context of Master Data Governance (MDG). Specifically, this error occurs when there is an attempt to use multiple reuse areas for a single entity, which is not supported in the current configuration.
  Cause:
  
  Multiple Reuse Areas: The error typically arises when the system detects that multiple reuse areas are being defined for a single entity in the CDS view. In MDG, each entity should have a single reuse area to ensure proper data handling and consistency.
  Incorrect Configuration: This can happen due to incorrect or conflicting configurations in the MDG setup, where the same entity is inadvertently linked to multiple reuse areas.
  Custom Development: If there are custom CDS views or enhancements that are not aligned with the standard MDG practices, this can lead to such errors.
  
  Solution:
  
  Review CDS Views: Check the CDS views associated with the entity in question. Ensure that there is only one reuse area defined for that entity. You may need to modify the CDS view to remove any conflicting reuse area definitions.
  Check MDG Configuration: Go through the MDG configuration settings to ensure that the entity is correctly set up with a single reuse area. This may involve reviewing the data model and the associated configurations in the MDG customizing settings.
  Consult Documentation: Refer to the SAP documentation for MDG and CDS to understand the correct setup and limitations regarding reuse areas.
  Debugging: If the issue persists, consider debugging the CDS view to identify where the multiple reuse areas are being defined. This may require technical expertise in ABAP and CDS.
  SAP Notes: Check for any relevant SAP Notes or updates that may address this issue. Sometimes, SAP releases patches or notes that provide solutions for known issues.
  
  Related Information:
  
  SAP Master Data Governance (MDG): MDG is a solution for managing master data across the enterprise. It provides tools for data modeling, data quality, and data governance.
  Core Data Services (CDS): CDS is a framework for defining and consuming semantically rich data models in SAP. It allows for the creation of views that can be used in various applications.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues and found solutions.
  
  If you continue to face challenges, consider reaching out to SAP support for further assistance, especially if this is impacting production systems.