How To Fix /ACCGO/OE_CALLOF_API021 - Document type missing in header data

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/OE_CALLOF_API -

• Message number: 021

• Message text: Document type missing in header data

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/OE_CALLOF_API021 - Document type missing in header data ?

  The SAP error message /ACCGO/OE_CALLOF_API021 Document type missing in header data typically occurs in the context of the SAP S/4HANA system, particularly when dealing with the API for document processing in the context of financial accounting or logistics.
  Cause:
  This error indicates that the document type is not specified in the header data of the API call. Document types are essential in SAP as they define the nature of the document being processed (e.g., invoice, credit memo, etc.) and determine how the system should handle it.
  Solution:
  To resolve this error, you should ensure that the document type is included in the header data of your API call. Here are the steps you can take:
  
  
  Check API Call Structure: Review the structure of your API call to ensure that the document type field is included in the header data. The document type is usually a mandatory field.
  
  
  Provide Document Type: If the document type is missing, you need to provide a valid document type that corresponds to the type of document you are trying to create or process. This can typically be done by adding a parameter in the API request.
  
  
  Validate Document Type: Ensure that the document type you are using is valid and configured in your SAP system. You can check this in the configuration settings for document types in the relevant module (e.g., Financial Accounting, Controlling).
  
  
  Consult Documentation: Refer to the official SAP documentation for the specific API you are using. This documentation often includes examples of valid requests and the required fields.
  
  
  Testing: After making the necessary changes, test the API call again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  API Documentation: Review the API documentation for /ACCGO/OE_CALLOF to understand the required fields and their formats.
  Transaction Codes: Use transaction codes like SE37 or SE80 to explore function modules or classes related to the API for further insights.
  Debugging: If you have access to the development environment, consider debugging the API call to see how the data is being processed and where the document type might be getting lost.
  
  By following these steps, you should be able to resolve the error and successfully process your document in SAP.