One of the field in my application is disable and I want to enable that particular text field. Any help is appreciated
Looks like you are missing some information. What you do to manually enable the text field?
Why do you want to do that?
Unless the app itself changes the disabled one to enabled through some action, you cannot do that.
actually in that field value will be populated when we scan a badge. But I want to overcome the scan by enabling the field and enter the data
You can’t do that. Ask your developer to create a stub for your scanner module.