How To Fix BOS01400 - Assignment of service number only for same unit of measure: &1 / &2

SAP Error Message - Details

• Message type: E = Error

• Message class: BOS01 - Customer BOS Processing

• Message number: 400

• Message text: Assignment of service number only for same unit of measure: &1 / &2

What causes this issue?

A service number has been assigned to a service line. The service
master record, however, contains a different unit of measure from the
service line.

System Response

An assignment is not possible.

How to fix this error?

Change the unit of measure for the service master record or assign a
different master record.

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 BOS01400 - Assignment of service number only for same unit of measure: &1 / &2 ?

  The SAP error message BOS01400, which states "Assignment of service number only for same unit of measure: &1 / &2," typically occurs in the context of service management or service order processing. This error indicates that there is a mismatch in the units of measure (UoM) between the service number being assigned and the service order or item to which it is being assigned.
  Cause:
  The error is caused by attempting to assign a service number that has a different unit of measure than the one defined for the service order or item. For example, if the service number is defined in hours and the service order is defined in days, this mismatch will trigger the error.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Units of Measure: Verify the unit of measure for both the service number and the service order/item. Ensure that they match. You can do this by:
  
  Navigating to the service number in the SAP system and checking its details.
  Checking the service order or item details to see what unit of measure is being used.
  
  
  
  Adjust Service Number or Order: If there is a mismatch, you have a couple of options:
  
  Change the unit of measure of the service number to match the service order/item.
  Alternatively, if the service order/item can be adjusted, change its unit of measure to match the service number.
  
  
  
  Consult Documentation: If you are unsure about how to change the units of measure, refer to the SAP documentation or consult with your SAP administrator or support team for guidance.
  
  
  Testing: After making the necessary adjustments, try to reassign the service number to the service order/item to see if the error persists.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes such as IW31 (Create Order), IW32 (Change Order), or IW33 (Display Order) to access service orders.
  Unit of Measure Configuration: If you frequently encounter this issue, it may be worth reviewing the configuration of units of measure in your SAP system. This can be done in the customizing settings under Logistics or Material Management.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context or solutions.
  
  By ensuring that the units of measure are consistent between the service number and the service order, you should be able to resolve the BOS01400 error.