How To Fix WS774 - Draft ID &1 is not unique (invalid API call)

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 774

• Message text: Draft ID &1 is not unique (invalid API call)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS774 - Draft ID &1 is not unique (invalid API call) ?

  The SAP error message:
  WS774 Draft ID &1 is not unique (invalid API call)
  typically occurs in the context of SAP Business Workflow or SAP Business Object Repository (BOR) API calls when working with draft objects.
  
  Cause
  
  Duplicate Draft ID: The error indicates that the system has encountered a draft ID that is not unique. Draft IDs are supposed to uniquely identify a draft instance of a business object.
  Invalid API Call: The API call that is trying to create or manipulate a draft object is passing a draft ID that already exists in the system.
  This can happen if:
  
  The draft ID is hardcoded or generated incorrectly, causing duplicates.
  The draft object was not properly deleted or cleaned up after a previous operation.
  There is a concurrency issue where multiple processes try to create drafts with the same ID simultaneously.
  
  
  
  
  Solution
  
  
  Check Draft ID Generation:
  
  Ensure that the draft ID is generated dynamically and uniquely for each draft instance.
  Avoid hardcoding draft IDs or reusing IDs from previous sessions.
  
  
  
  Clean Up Existing Drafts:
  
  Use transaction codes like SWI1 (Work Item Selection) or SWI2_FREQ (Frequent Tasks) to find and delete stale or orphaned drafts.
  Alternatively, use BOR or workflow APIs to delete drafts programmatically if needed.
  
  
  
  Review API Usage:
  
  Verify that the API calls related to draft creation or manipulation are used correctly according to SAP documentation.
  Check if the API requires a unique draft ID or if it can generate one internally.
  
  
  
  Check for Concurrency Issues:
  
  If multiple users or processes create drafts simultaneously, implement locking or synchronization mechanisms to avoid duplicate draft IDs.
  
  
  
  Debugging:
  
  Use transaction SE37 or SE80 to debug the function module or method that raises the error.
  Trace the draft ID value and see where it is assigned or passed.
  
  
  
  
  Related Information
  
  SAP Notes: Search for SAP Notes related to WS774 or draft ID issues in the SAP Support Portal.
  SAP Workflow: Draft objects are often used in SAP Business Workflow to save intermediate states.
  BOR (Business Object Repository): Draft IDs are part of BOR object instances.
  API Documentation: Review the API documentation for the specific function module or method you are using to handle drafts.
  Transactions:
  
  SWI1 - Work Item Selection
  SWI2_FREQ - Frequent Tasks
  SWI5 - Work Item Analysis
  
  
  
  
  If you provide the exact API or function module you are using, I can help with more specific guidance.