What is 1099-R Box 10 - Amount allocable to IRR within 5 years?

What is Box 10 IRR?

I have an entry in a 1099-R, Box 10.  This is due to annuitizing an individual IRA Annuity into a Joint Life Annuity in 2022. It is the same amount as in Boxes 1 and 2a.

The amount in box 10 is the total amount of the annuity payments made in 2022.  This was entered into TT-2022 (PC Windows version), but it doesn't appear to have caused any additional forms (eg, 5329) to have been generated. 

This amount was also applied to my total RMDs due.  The rest of the RMD total due was covered by distributions form other (normal, non-annuity) IRAs of mine as I have done in the past.

Is there anything I should be concerned about here due to this annuitization?

If it matters, Taxes were also with-held from the annuity payments.

Thanks much!