How To Fix WSFP_MESSAGE018 - Error converting value &1 of characteristic &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WSFP_MESSAGE - Message Class for Integrating In-Store Production

• Message number: 018

• Message text: Error converting value &1 of characteristic &2

Self-Explanatory Message

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• What is the cause and solution for SAP error message WSFP_MESSAGE018 - Error converting value &1 of characteristic &2 ?

  The SAP error message:
  WSFP_MESSAGE018: Error converting value &1 of characteristic &2
  
  Meaning / Cause
  This error occurs during the processing of a workflow or classification when the system tries to convert a value for a characteristic but fails. The placeholders &1 and &2 represent:
  
  &1: The value that could not be converted.
  &2: The characteristic name for which the value conversion failed.
  
  Typical causes include:
  
  The value provided does not conform to the expected data type or format of the characteristic.
  The characteristic is defined with a specific domain or data type, and the input value violates these constraints.
  The value might be out of range, contain invalid characters, or be incompatible with the characteristic's data type (e.g., trying to assign a string to a numeric characteristic).
  In classification or variant configuration scenarios, the value might not be valid for the characteristic's allowed values or value range.
  Sometimes, this error can occur if the characteristic is linked to a value table and the value does not exist in that table.
  
  
  Where it occurs
  
  During workflow processing involving characteristics.
  When reading or writing classification data.
  In variant configuration or classification-based processes.
  When transferring data between systems or modules that use characteristics.
  
  
  Solution / How to fix
  
  
  Check the characteristic definition:
  
  Go to transaction CT04 (Characteristic maintenance).
  Verify the data type and domain of the characteristic.
  Check if the characteristic has a value table or fixed values.
  
  
  
  Validate the value:
  
  Ensure the value &1 matches the expected data type and format.
  If the characteristic expects numeric values, make sure the value is numeric.
  If the characteristic expects a value from a fixed list or value table, ensure the value exists there.
  
  
  
  Check the source of the value:
  
  Identify where the value is coming from (e.g., user input, interface, workflow container).
  Correct the source data or mapping to provide a valid value.
  
  
  
  Adjust the workflow or program logic:
  
  If the error occurs in a workflow, check the container elements and the assignment of characteristic values.
  Add validation or conversion logic before assigning the value.
  
  
  
  Check for conversion exits or user exits:
  
  Sometimes, custom conversion logic can cause issues.
  Review any user exits or BAdIs related to characteristic value processing.
  
  
  
  Test with valid values:
  
  Try to reproduce the error with known good values to isolate the problem.
  
  
  
  
  Additional information
  
  This error is related to the SAP Classification system (CL), which is widely used in variant configuration, material classification, and workflow scenarios.
  The error message is part of the workflow framework messages (WSFP).
  If the characteristic is used in variant configuration (transaction CU50), check the characteristic and class assignments.
  If the problem persists, enable debugging or trace the workflow to find the exact point of failure.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error message
  WSFP_MESSAGE018
  
  
  Cause
  Value &1 cannot be converted for characteristic &2 due to data type or format mismatch.
  
  
  Solution
  Verify characteristic definition and data type; ensure value is valid and correctly formatted; correct source data or workflow logic.
  
  
  Transactions
  CT04 (Characteristic maintenance), CL02 (Change class), workflow tools (SWI1, SWDD)
  
  
  
  
  If you provide the actual values for &1 and &2, I can help you analyze the specific case further.