How To Fix ESH_CDS_VAL013 - Field &1 of view &2 derived from &3 has null expression in WHERE

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_CDS_VAL -

• Message number: 013

• Message text: Field &1 of view &2 derived from &3 has null expression in WHERE

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_CDS_VAL013 - Field &1 of view &2 derived from &3 has null expression in WHERE ?

  The SAP error message ESH_CDS_VAL013 indicates that there is a problem with a Core Data Services (CDS) view where a field is being referenced in the WHERE clause, but it has a null expression. This typically occurs when the CDS view is trying to filter data based on a field that is not properly defined or is returning null values.
  Cause:
  
  Null Values: The field referenced in the WHERE clause may contain null values, which leads to the error when the system tries to evaluate the condition.
  Incorrect Field Mapping: The field might not be correctly mapped or defined in the CDS view, leading to an invalid expression.
  Data Model Issues: There could be issues in the underlying data model or the data itself, such as missing or incomplete data.
  Inconsistent Data Types: The data types of the fields being compared in the WHERE clause may not be compatible.
  
  Solution:
  
  Check the Data: Review the data in the underlying tables to ensure that the field does not contain null values. If it does, consider how to handle these cases (e.g., filtering them out or providing default values).
  Review the CDS View Definition: Ensure that the field is correctly defined in the CDS view. Check the annotations and ensure that the field is properly mapped.
  Modify the WHERE Clause: If the field can be null, modify the WHERE clause to handle null values appropriately. For example, you can use IS NOT NULL to filter out null values.
  Data Type Consistency: Ensure that the data types of the fields being compared in the WHERE clause are consistent and compatible.
  Check for Updates: If you are using a standard SAP CDS view, check if there are any updates or notes from SAP regarding this issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  CDS View Documentation: Review the documentation for the specific CDS view to understand its structure and requirements.
  Debugging Tools: Use debugging tools in SAP (like the ABAP debugger) to trace the execution and identify where the null expression is being generated.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.