How To Fix CRM_WSC219 - Number of key fields in read input is not the same as in query &1 output

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_WSC - WSC: Message Class for web Service Consumption Tool

• Message number: 219

• Message text: Number of key fields in read input is not the same as in query &1 output

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_WSC219 - Number of key fields in read input is not the same as in query &1 output ?

  The SAP error message CRM_WSC219 indicates that there is a mismatch between the number of key fields provided in the input for a read operation and the number of key fields expected in the output of the query. This typically occurs in the context of SAP CRM (Customer Relationship Management) when working with Web Services or when executing queries that involve key fields.
  Cause:
  
  
  Mismatch in Key Fields: The primary cause of this error is that the input data structure (the key fields you are providing) does not match the expected structure defined in the query output. This can happen if:
  
  The input structure has fewer key fields than the output structure.
  The input structure has more key fields than the output structure.
  The key fields are not correctly defined or are missing in the input.
  
  
  
  Changes in Data Model: If there have been recent changes to the data model or the underlying database structure, it may lead to discrepancies between the expected and provided key fields.
  
  
  Incorrect Mapping: If you are using a mapping or transformation layer (like middleware), there might be an issue with how the key fields are being mapped from the source to the target.
  
  
  Solution:
  
  
  Check Input Structure: Review the input structure you are providing to ensure that it matches the expected key fields in the query output. Make sure that:
  
  The number of key fields is the same.
  The key fields are correctly named and formatted.
  
  
  
  Review Query Definition: Look at the definition of the query (or the service) you are calling to understand what key fields it expects. This can usually be found in the transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator).
  
  
  Adjust Mapping: If you are using middleware or any transformation logic, ensure that the mapping of key fields is correctly configured.
  
  
  Test with Sample Data: If possible, test the query with known good input data that matches the expected structure to isolate the issue.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific query or service you are using for any additional requirements or changes.
  
  
  Debugging: If you have access to the backend, consider debugging the process to see the exact input being passed and how it is being processed.
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module), and SE24 (Class Builder) can be useful for checking the definitions of the data structures and queries.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific version of SAP CRM you are using.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and their solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the CRM_WSC219 error.