How to keep specific fields editable after displaying error message in MIRO transaction?

Other Questions Miro
1

I’m working on custom validation logic for MIRO transaction using BADI MRM_HEADER_CHECK. When I detect that a reference number is already in use, I need to show an error message but still allow users to edit certain fields.

The problem is that when I display an error message with type E, all fields become disabled and users cannot make corrections. I need to keep two specific fields active so users can fix their input.

Here’s what I tried:

  • Using MESSAGE <text> TYPE 'S' DISPLAY LIKE 'E' but it doesn’t work properly
  • Adding LOOP AT SCREEN logic in my BADI but it doesn’t recognize the field names I want to control
  • The screen number shows as 6000 when I check SY-DYNPRO

I cannot modify the standard SAP code outside my BADI implementation like PAI/PBO modules or field chains:

CHAIN.
  FIELD: input1, input2, input3.
  MODULE validation_check.
ENDCHAIN.

My current BADI implementation looks like this:

*Access the document header data
ASSIGN ('(SAPLMR1M)INVOICE_HEADER') TO <lv_header_data>.
IF <lv_header_data>-REFERENCE_NUM = lv_existing_ref.
  MESSAGE lv_error_text TYPE 'E'.
ENDIF.

Is there a way to show the error message while keeping selected fields editable? Any suggestions would be helpful.

2

try using message type ‘W’ insted of ‘E’ - warnings dont disable fields like errors do. this way, users can still edit those fields after they see the warning.