How To Fix WSTI026 - Unprocessed PDC inbounds exist. Post differences?

SAP Error Message - Details

• Message type: E = Error

• Message class: WSTI - Messages about Store Workbench, Physical Inventory

• Message number: 026

• Message text: Unprocessed PDC inbounds exist. Post differences?

Self-Explanatory Message

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• What is the cause and solution for SAP error message WSTI026 - Unprocessed PDC inbounds exist. Post differences? ?

  SAP Error Message:
  
  WSTI026 - Unprocessed PDC inbounds exist. Post differences?
  
  Cause:
  This error occurs in SAP when you try to post differences in inventory or perform certain inventory-related postings, but there are still unprocessed PDC (Physical Data Capture) inbound documents pending in the system. Essentially, the system detects that there are inbound PDC documents (e.g., data from barcode scanners or other physical inventory capture devices) that have not yet been processed or posted. Posting differences while unprocessed PDC inbounds exist can lead to inconsistencies in inventory data.
  
  Explanation:
  
  PDC (Physical Data Capture) is used in warehouse management and inventory processes to capture physical inventory data via handheld devices or scanners.
  When PDC inbound documents are created (e.g., after a physical inventory count), they must be processed (posted) to update the inventory records.
  If you attempt to post differences or perform inventory postings before processing these inbound documents, SAP raises this error to prevent data inconsistencies.
  
  
  Solution:
  
  
  Process all unprocessed PDC inbound documents:
  
  Go to the transaction or application where PDC inbound documents are managed (e.g., transaction /SCWM/PI_INB in Extended Warehouse Management or relevant PDC processing transactions).
  Identify all unprocessed PDC inbound documents.
  Post or process these documents to update the inventory data.
  
  
  
  Verify that no unprocessed PDC inbound documents remain:
  
  After processing, confirm that the system no longer shows any unprocessed PDC inbound documents.
  
  
  
  Retry posting differences:
  
  Once all PDC inbound documents are processed, you can proceed with posting differences or other inventory postings.
  
  
  
  
  Additional Information:
  
  This message is common in environments using SAP Extended Warehouse Management (EWM) or Inventory Management with PDC integration.
  It ensures data integrity by preventing postings that could conflict with physical inventory data captured but not yet posted.
  If you frequently encounter this message, review your PDC processing workflows to ensure timely processing of inbound documents.
  In some cases, if documents are stuck or cannot be processed due to errors, investigate the root cause (e.g., data inconsistencies, missing master data) and resolve those issues before retrying.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Unprocessed PDC inbound documents exist when trying to post inventory differences.
  
  
  Effect
  Posting differences is blocked to avoid inventory inconsistencies.
  
  
  Solution
  Process/post all unprocessed PDC inbound documents before posting differences.
  
  
  Related Areas
  Physical Inventory, PDC processing, Warehouse Management (EWM), Inventory Management.
  
  
  
  
  If you need specific transaction codes or steps tailored to your SAP system version or module (e.g., WM vs. EWM), please provide more details.