How To Fix L3457 - Changes not allowed in customer exit for transfer order split

L3457 - Overview

• Message type: E = Error

• Message class: L3 -

• Message number: 457

• Message text: Changes not allowed in customer exit for transfer order split

What causes this issue?

You have changed the transmission table of the customer exit in a way
that is not permissible. The <DS:MO.EXIT_SAPLL03A_012>documentation of
the customer exit</> describes in detail that only the fields 'REIHF'
and 'POOLN' may be changed there .
If specific items occur in handling units, then different criteria must
be taken into consideration.
If there is a handling unit item in a transfer order, all the items of
this order must be handling units.
If the indicator for separate confirmation is set for a transfer order
item, this indicator must also be set for all other items of this
order.
HU TO items and the respective material items must not be split up into
different transfer orders (this can be determined from the different
characteristics of the field FHUTA).

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?

Check whether other fields in the customer exit have been changed.
Inserting new entries into the table or removing existing entries is
not allowed.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message L3457 - Changes not allowed in customer exit for transfer order split ?

  The SAP error message L3457, "Changes not allowed in customer exit for transfer order split," typically occurs during the process of splitting transfer orders in the SAP system. This error indicates that there are restrictions in place that prevent modifications to certain fields or data during the execution of a customer exit related to transfer order processing.
  
  Cause:
  
  Customer Exit Restrictions: The error is often triggered by the logic defined in a customer exit (a user-defined enhancement) that is preventing changes to specific fields during the transfer order split process.
  Data Integrity: SAP enforces data integrity rules to ensure that the transfer order remains consistent and valid. If the system detects an attempt to change data that is not allowed during the split, it raises this error.
  
  Configuration Issues: There may be configuration settings in the system that restrict changes to certain fields during the transfer order processing.
  
  
  Solution:
  
  Review Customer Exit Logic: Check the code