How To Fix W_CB148 - No field checks possible at 'BU' point (before save)

W_CB148 - Overview

• Message type: E = Error

• Message class: W_CB -

• Message number: 148

• Message text: No field checks possible at 'BU' point (before save)

What causes this issue?

You want to create a check for a field that is to be performed at the
'BU' point (before the save)

System Response

At the 'BU' point, no further checks are performed at field level. It is
only possible to perform an entire structure check. It is therefore not
possible to create checks for a specific field at the 'BU' point

How to fix this error?

Delete the field name that you want to check, or change the execution
time

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 W_CB148 - No field checks possible at 'BU' point (before save) ?

  SAP Error Message:
  W_CB148 No field checks possible at 'BU' point (before save)
  
  Cause
  This warning message occurs in the SAP system during the processing of business transactions, typically in the context of Business Add-Ins (BAdIs) or user exits related to document processing (e.g., financial documents, sales documents, etc.).
  
  The message indicates that the system is trying to perform field checks (validations) at a point in the processing called 'BU' (which stands for Before Update or a similar processing step).
  However, at this point, field checks are not possible because the data is either not yet fully available or the system does not allow validations before the save/update operation.
  This usually happens when custom code or enhancements attempt to trigger field checks or validations at an inappropriate processing point.
  
  
  When does it occur?
  
  During document processing, especially when custom validations or field checks are implemented in user exits or BAdIs.
  When the system tries to perform field checks before