How To Fix SADL_ENTITY_RUNTIME022 - Path expression error: cardinality of association &1 is greater than one

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_ENTITY_RUNTIME - Messages of SADL runtime and DDIC SADL entity runtime

• Message number: 022

• Message text: Path expression error: cardinality of association &1 is greater than one

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_ENTITY_RUNTIME022 - Path expression error: cardinality of association &1 is greater than one ?

  The SAP error message SADL_ENTITY_RUNTIME022 indicates that there is a path expression error related to the cardinality of an association in your SAP application. Specifically, it means that the association you are trying to navigate has a cardinality greater than one, which means it can return multiple records, but the context in which you are trying to use it expects a single record.
  Cause:
  
  Cardinality Mismatch: The association you are trying to access is defined as a one-to-many relationship (1:N) or many-to-many (N:N), but the code or query is attempting to treat it as a one-to-one relationship (1:1).
  Incorrect Path Expression: The path expression used in your query or code may not be correctly formulated to handle multiple records.
  Data Model Design: The underlying data model may not be designed correctly, leading to unexpected results when navigating associations.
  
  Solution:
  
  Review the Association: Check the definition of the association in your data model. Ensure that you understand its cardinality and how it should be used in your queries.
  Adjust the Query: Modify your query or path expression to handle multiple records. For example, if you are using a filter or a selection that expects a single record, you may need to change it to accommodate multiple records.
  
  If you are using an OData service, ensure that you are using the correct syntax to retrieve multiple records.
  
  
  Use Aggregation: If you need to summarize or aggregate the results from the association, consider using aggregation functions to reduce the multiple records to a single value.
  Debugging: Use debugging tools to trace the execution of your code and see where the error occurs. This can help you identify the specific part of the path expression that is causing the issue.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for SADL (SAP Data Access Layer) to understand how associations and path expressions work.
  Data Model: Review the data model in the SAP system to ensure that associations are correctly defined and that the cardinalities are appropriate for your use case.
  Community Forums: Check SAP Community forums or other developer forums for similar issues and solutions shared by other developers.
  
  By addressing the cardinality mismatch and ensuring that your queries are correctly structured to handle multiple records, you should be able to resolve the SADL_ENTITY_RUNTIME022 error.