How To Fix FDT_EXPRESSIONS691 - Context field &1 of step &2 is not compatible to WA value

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 691

• Message text: Context field &1 of step &2 is not compatible to WA value

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS691 - Context field &1 of step &2 is not compatible to WA value ?

  The SAP error message FDT_EXPRESSIONS691 indicates that there is a compatibility issue with a context field in a specific step of a process. This error typically arises in the context of using the SAP Fiori Design Time (FDT) or when working with expressions in SAP workflows or data processing scenarios.
  Cause:
  The error message suggests that the context field (&1) in the specified step (&2) is not compatible with the value being assigned or processed (referred to as "WA value"). This can occur due to several reasons:
  
  Data Type Mismatch: The data type of the context field does not match the data type of the value being assigned. For example, trying to assign a string value to a numeric field.
  Field Length Issues: The length of the value being assigned exceeds the maximum length defined for the context field.
  Null or Undefined Values: The value being assigned is null or undefined, which may not be acceptable for the context field.
  Incorrect Mapping: There may be an issue with how the fields are mapped in the workflow or expression logic.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Check Data Types: Verify that the data types of the context field and the value being assigned are compatible. Ensure that you are not trying to assign a value of one type to a field of another type.
  Review Field Lengths: Ensure that the value being assigned does not exceed the defined length of the context field. If necessary, truncate or modify the value to fit.
  Handle Null Values: Ensure that the value being assigned is not null or undefined. Implement checks to handle such cases appropriately.
  Examine Mapping Logic: Review the mapping logic in the workflow or expression to ensure that the correct fields are being referenced and that the logic is sound.
  Debugging: Use debugging tools available in SAP to trace the execution and identify where the incompatibility arises.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for FDT and expressions to understand the expected data types and structures.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and to find potential solutions.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like SE80 for Object Navigator) to inspect the workflow or expressions in detail.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.