How To Fix M3532 - This order unit has been used already

M3532 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 532

• Message text: This order unit has been used already

What causes this issue?

When changing the order unit, please note that purchasing has documents
for the material which contain the old order unit.

System Response

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

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

M3532 - Details

• The SAP error message M3532, which states "This order unit has been used already," typically occurs in the context of inventory management or production planning when you attempt to use a specific order unit (such as a batch or serial number) that has already been assigned or utilized in a previous transaction. This can happen in various scenarios, such as during goods movements, production confirmations, or inventory adjustments.
  
  Cause:
  
  Duplicate Usage: The order unit you are trying to use has already been assigned to another transaction, and SAP does not allow the same unit to be used multiple times.
  Batch Management: If you are working with batch-managed materials, the batch may have already been consumed or reserved for another order.
  Serial Number Management: If the material is serialized, the serial number may have already been assigned to another document or transaction.
  Incorrect Data Entry: There may be a mistake in the data entry, such as