How To Fix CRM_WSC315 - Only one child should exist for table type

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 315

• Message text: Only one child should exist for table type

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_WSC315 - Only one child should exist for table type ?

  The SAP error message CRM_WSC315: Only one child should exist for table type typically occurs in the context of SAP CRM (Customer Relationship Management) when there is an issue with the data structure, particularly when dealing with table types in the context of a Web Service or a Business Object.
  Cause:
  This error usually arises when:
  
  Data Structure Violation: The system expects a specific structure for a table type, and it finds more than one child element where only one is allowed. This can happen if the data being sent to or processed by a web service or function module does not conform to the expected format.
  Incorrect Mapping: If the mapping of the data to the table type is incorrect, it can lead to multiple entries being created when only one is expected.
  Configuration Issues: There may be issues in the configuration of the business object or web service that lead to this error.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Data Structure: Review the data being sent to the function module or web service. Ensure that the data structure matches the expected format, particularly that only one child element is being sent where required.
  
  
  Debugging: Use the SAP debugger to trace the execution of the program or web service. This can help identify where the data structure is being violated.
  
  
  Review Mapping: If you are using a middleware or integration tool, check the mapping of the data to ensure that it aligns with the expected structure in SAP.
  
  
  Configuration Review: Check the configuration of the business object or web service to ensure that it is set up correctly and that there are no discrepancies in the expected data structure.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific business object or web service you are working with. There may be specific guidelines or known issues that can provide further insight.
  
  
  Testing: After making changes, conduct thorough testing to ensure that the error does not recur and that the data is processed correctly.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like SE80 for Object Navigator, SE37 for Function Modules) that can help you analyze the business object or web service in question.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.