How To Fix WS773 - Draft ID cannot be used (invalid API call)

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 773

• Message text: Draft ID cannot be used (invalid API call)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS773 - Draft ID cannot be used (invalid API call) ?

  The SAP error message:
  WS773 Draft ID cannot be used (invalid API call)
  typically occurs when working with SAP Business Workflow or SAP Business Object Repository (BOR) APIs, especially when handling draft objects or draft IDs in scenarios involving workflow tasks, change documents, or business object processing.
  
  Cause
  
  
  Invalid or inappropriate use of a Draft ID in an API call:
  
  The error indicates that the Draft ID provided in the API call is not valid or cannot be used in the current context. This often happens when:
  
  The Draft ID is expired, deleted, or does not exist.
  The API being called does not support operations on draft objects or draft IDs.
  The Draft ID is passed to a function module or method that expects a finalized object or a different type of identifier.
  The draft object is locked or in an inconsistent state.
  
  
  
  Incorrect sequence of API calls:
  
  For example, trying to use a Draft ID before it is properly created or after it has been committed or discarded.
  
  
  Mismatch between the business object and the draft ID:
  
  The draft ID might belong to a different business object or context than expected.
  
  
  
  Solution
  
  
  Verify the Draft ID:
  
  Check if the Draft ID exists and is valid.
  Ensure the draft object is not deleted or expired.
  Use transaction /n/iwbep/draft or relevant tools to inspect draft objects if applicable.
  
  
  
  Check API documentation:
  
  Confirm that the API or method you are calling supports draft objects.
  Use the correct API calls designed for draft handling (e.g., SAVE_DRAFT, GET_DRAFT, COMMIT_DRAFT).
  
  
  
  Correct the sequence of calls:
  
  Make sure the draft is created before it is used.
  Avoid using draft IDs after the draft has been committed or discarded.
  
  
  
  Use appropriate business object methods:
  
  If working with BOR objects, use methods that explicitly support draft processing.
  For example, use CREATE_DRAFT and SAVE_DRAFT methods before trying to use the draft ID.
  
  
  
  Check for locks or inconsistencies:
  
  Ensure the draft object is not locked by another user or process.
  Unlock or clean up stale drafts if necessary.
  
  
  
  Debugging:
  
  Use transaction SWUS or SWI1 to check workflow logs if the error occurs in workflow context.
  Use debugger to trace the API call and check the parameters passed.
  
  
  
  
  Related Information
  
  
  SAP Notes and KBAs:
  
  Search SAP Support Portal for notes related to WS773 or draft handling errors.
  Common notes related to draft handling in SAP Gateway or Workflow.
  
  
  
  SAP Business Workflow and BOR:
  
  Draft handling is common in workflows where changes are staged before final commit.
  BOR methods have specific APIs for draft processing.
  
  
  
  SAP Gateway / OData Services:
  
  Draft handling is also relevant in SAP Gateway OData services where draft-enabled entities are used.
  Ensure that the OData service supports draft operations and that the client uses the draft ID correctly.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WS773 Draft ID cannot be used (invalid API call)
  
  
  Cause
  Draft ID invalid, expired, or used in unsupported API call or wrong sequence
  
  
  Solution
  Verify draft ID validity, use correct API calls for draft handling, correct call sequence
  
  
  Related Info
  SAP Workflow, BOR draft methods, SAP Gateway draft-enabled services, SAP Notes
  
  
  
  
  If you provide more context (e.g., which transaction, program, or API you are using), I can help tailor the solution further.