Why is client's return rejected with error message first time homebuyers credit repayment when amount is on return?

[nancyb1209]

Form 5405 shows repayment in 2021 of 500 which appears on schedule 2 line 10.  Why is return being rejected?

[Just-Lisa-Now-]

what does the rejection message say?

You may want to check and make sure the IRS records match what you have

https://www.irs.gov/credits-deductions/individuals/first-time-homebuyer-credit-account-look-up