disabling G/L Account field in MIGO transaction

HIiya Gurus,

I have got a requirement to disable the GL Account field in Accounting tab in the MIGO transaction. since i am an abaper i am not sure how to disable this field. i have gone through the transaction SPRO , but unfortunately for the filed G/L Account field KONTO there are only 2 options :--

either to make it optional or mandatory.

But my requirement is to make it disabled (greyed out), IS it possible to Grey out that field.

In my customization this field is set as Option.

Kindly provide me with your valuable suggestions. 😊

Cheers,

ZIa