Enter the total from all plans that was distributed to you that's part of your RMD.
Don't enter any distribution amount received after the deadline for taking the RMD or during the
correction window.
Don't enter any amount you received in excess of your RMD.
Multiple IRAs:
If you have more than one traditional IRA, you must determine a separate
RMD for each IRA. However, you can total these minimum amounts and take the required distribution from any one or more of the IRAs.
You can't use your Roth IRA to satisfy minimum distribution requirements for a traditional IRA. Nor can you use distributions from traditional IRAs for required distributions from Roth IRAs.
If you have an inherited IRA the rules are different see
Inherited IRAs for more information.
Multiple Non-IRA Retirement Plans:
If you have more than one retirement plan (that is not an IRA), you can't combine the distributions from multiple plans to meet the RMD. You should figure the amount separately for each plan and withdraw the required amount from each plan.
Multiple 403(b) plans:
If you have more than one 403(b) account, you can total the RMD from all accounts and then take this distribution from any one (or more) of the accounts.