How To Fix ESH_FED_MSG027 - Error while reading the query: Query contains a cycle

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_FED_MSG - Search Federation

• Message number: 027

• Message text: Error while reading the query: Query contains a cycle

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_FED_MSG027 - Error while reading the query: Query contains a cycle ?

  The SAP error message ESH_FED_MSG027 indicates that there is a cycle in the query definition, which means that the query is trying to reference itself in a way that creates a loop. This can happen in scenarios where there are recursive relationships or when the query is constructed in a way that it inadvertently refers back to itself.
  Cause:
  
  Recursive Relationships: The query may involve entities that have recursive relationships, leading to a situation where the query can keep referencing itself.
  Incorrect Joins: The way tables or entities are joined in the query might create a cycle. For example, if a join condition inadvertently creates a loop.
  Query Definition: The query might be defined in a way that it includes itself as part of its own definition, either directly or indirectly.
  
  Solution:
  
  Review Query Structure: Examine the query definition to identify any recursive references or loops. Ensure that the query does not include itself in its own definition.
  Check Joins: Look at the join conditions in the query. Make sure that they do not create a cycle. If necessary, simplify the joins or break them down into smaller parts.
  Modify Query Logic: If the query is complex, consider breaking it down into multiple queries or using subqueries to avoid cycles.
  Use Query Designer: If you are using a query designer tool, utilize its features to visualize the relationships and ensure that there are no cycles.
  Test Incrementally: If you are modifying an existing query, test it incrementally to identify the point at which the cycle is introduced.
  
  Related Information:
  
  Documentation: Refer to SAP documentation for guidelines on query design and best practices to avoid cycles.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  By carefully reviewing the query structure and relationships, you should be able to resolve the cycle issue and eliminate the error message.