How To Fix WSTI_MM07I001 - The difference cannot be posted (calculate book inventory first)

SAP Error Message - Details

• Message type: E = Error

• Message class: WSTI_MM07I - BAdI Implementation Messages MB_PHYSINV_INTERNAL

• Message number: 001

• Message text: The difference cannot be posted (calculate book inventory first)

What causes this issue?

The procedure for supporting physical inventory during opening times in
plant &V1& and storage location &V2& is activated. Therefore, the book
inventories for the counted items in a physical inventory document must
be calculated at count time before the physical inventory differences
for these items can be posted. However, no book inventories at count
time have been calculated for any of the items counted in physical
inventory document &V3&.

System Response

The system will not allow you to post the differences for document &V3&.

How to fix this error?

Execute the calculation of book inventories at count time. Then you can
post the physical inventory differences.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WSTI_MM07I001 - The difference cannot be posted (calculate book inventory first) ?

  SAP Error Message:
  
  WSTI_MM07I001 – The difference cannot be posted (calculate book inventory first)
  
  Cause:
  This error occurs during inventory posting or stock difference posting in SAP when the system detects that the book inventory (the system's recorded stock quantity) has not been calculated or updated before attempting to post the difference. Essentially, the system requires the book inventory to be calculated and up-to-date to correctly post any stock differences.
  This situation typically arises in scenarios such as:
  
  After a physical inventory count, before posting the differences.
  When the system's inventory data is out of sync or not updated.
  When the inventory calculation step (e.g., running the inventory difference calculation or stock reconciliation) has been skipped or not completed.
  
  
  Explanation:
  SAP requires the book inventory to be calculated to determine the correct stock levels before posting any differences. If the book inventory is not calculated, the system cannot determine the difference between the physical inventory and the book inventory, hence it refuses to post the difference.
  
  Solution:
  
  
  Calculate Book Inventory:
  
  Run the inventory calculation program to update the book inventory.
  This is usually done via transaction MI01, MI04, or MI07 depending on the process.
  Alternatively, use transaction MI20 (Calculate Inventory Differences) or MI21 (Post Inventory Differences) after ensuring the book inventory is calculated.
  
  
  
  Steps to resolve:
  
  Ensure that the physical inventory document is created and counted.
  Execute the inventory difference calculation to update the book inventory.
  After the calculation is complete, post the inventory differences.
  
  
  
  Check for inconsistencies:
  
  Verify if there are any open or incomplete inventory documents.
  Check if the stock data is locked or if there are any batch or material master inconsistencies.
  
  
  
  Re-run the process:
  
  After calculating the book inventory, retry posting the difference.
  
  
  
  
  Related Information:
  
  
  Transactions:
  
  MI01 – Create Physical Inventory Document
  MI04 – Enter Inventory Count
  MI07 – Post Inventory Differences
  MI20 – Calculate Inventory Differences
  MI21 – Post Inventory Differences
  
  
  
  Notes:
  
  Always ensure that the physical inventory process is followed in sequence: create document ? count ? calculate differences ? post differences.
  If using batch or special stock, ensure these are also properly counted and calculated.
  Check for any custom enhancements or user exits that might interfere with inventory posting.
  
  
  
  SAP Help / Documentation:
  
  Refer to SAP Library under Inventory Management ? Physical Inventory ? Posting Inventory Differences.
  SAP Notes related to inventory posting errors may provide additional troubleshooting steps.
  
  
  
  
  Summary:
  Error WSTI_MM07I001 indicates that the system cannot post stock differences because the book inventory has not been calculated. To fix this, calculate the book inventory first using the appropriate inventory calculation transaction, then post the differences. This ensures the system has the correct baseline stock data to process the difference posting.