How To Fix MDG_HDB_SEARCH071 - Search view cannot be generated; entity &1 and &2 leads to cyclic joins

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_HDB_SEARCH -

• Message number: 071

• Message text: Search view cannot be generated; entity &1 and &2 leads to cyclic joins

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_HDB_SEARCH071 - Search view cannot be generated; entity &1 and &2 leads to cyclic joins ?

  The SAP error message MDG_HDB_SEARCH071 indicates that there is a problem with generating a search view due to cyclic joins between entities in the Master Data Governance (MDG) system. This typically occurs when the relationships between the entities are defined in such a way that they create a loop, making it impossible for the system to generate a valid SQL query for the search view.
  Cause:
  
  Cyclic Joins: The primary cause of this error is the presence of cyclic relationships between the entities involved. For example, if Entity A is related to Entity B, and Entity B is related back to Entity A (or through another entity), it creates a cycle.
  Incorrect Data Model: The data model may not be designed correctly, leading to unintended relationships that cause cycles.
  Configuration Issues: There may be issues in the configuration of the search view or the underlying data model that lead to these cyclic relationships.
  
  Solution:
  
  Review Entity Relationships: Examine the relationships between the entities involved in the error. Identify any cyclic dependencies and consider redesigning the relationships to eliminate cycles.
  Modify Data Model: If possible, adjust the data model to break the cycle. This may involve changing how entities are related or introducing intermediary entities to facilitate the relationships without creating cycles.
  Check Configuration: Review the configuration settings for the search view. Ensure that the joins defined in the search view do not create cycles.
  Use Alternative Search Views: If the cyclic join cannot be resolved, consider using alternative search views or creating a new search view that does not involve the problematic entities.
  Consult Documentation: Refer to SAP documentation or notes related to MDG and search views for any specific guidelines or best practices regarding entity relationships and search view configurations.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on resolving cyclic joins in MDG.
  MDG Data Model: Familiarize yourself with the MDG data model and how entities are related. Understanding the underlying structure can help in identifying and resolving issues.
  Testing: After making changes, test the search view generation to ensure that the error is resolved and that the search functionality works as expected.
  
  If the issue persists after attempting these solutions, it may be beneficial to engage with SAP support or consult with an SAP expert who specializes in MDG configurations.