Thank you for your reply. I'm not disputing what you're saying, but, it's evident that the information given to me by the Maryland Tax support call center was incorrect. What I had already done was to submit my MD tax return with 502CR included. I download it from the Maryland site. I filled out form 502CR like it was done in 2023. Line M, Line 12, Line 14 with $1,000. However, I made no changes to my submitted return and paid the money owed for $709. So I'll see if there are any consequences. I appreciate your help and have a nice day.