How To Fix EG820 - Fields not ready for input were set using the enhancement

EG820 - Overview

• Message type: E = Error

• Message class: EG - IS-U device management

• Message number: 820

• Message text: Fields not ready for input were set using the enhancement

What causes this issue?

An error occurred during the enhancement check for presassignment of
entry data for goods receipt or device creation dialogs.

System Response

You cannot change fields that are not ready for input on the screen.

How to fix this error?

Check your user enhancement.

Error message extract from SAP system. Copyright SAP SE.

EG820 - Details

• The SAP error message EG820 ("Fields not ready for input were set using the enhancement") typically occurs in the context of SAP enhancements or modifications where certain fields in a screen or transaction are being manipulated. This error indicates that the system is trying to set fields that are not currently available for input, which can lead to inconsistencies or unexpected behavior in the application.
  
  Cause:
  
  Field Status Configuration: The fields in question may be configured as "display only" or "not ready for input" in the screen layout or field status group.
  Enhancement Implementation: An enhancement (like a user exit or BAdI) may be incorrectly implemented, attempting to set values for fields that are not editable at that point in the transaction.
  Screen Logic: The logic in the screen or program may not be correctly handling the state of the fields, leading to attempts to set values when they should not be set.
  
  
  Solution:
  
  Check Field