The pension plan should have forced you to take the pension-plan RMD before rolling over the remainder.
If your 2018 RMD from the pension plan was not satisfied before or coincident with rolling over the pension plan to the IRA, the distribution from the pension plan included your pension-plan RMD and you impermissibly rolled the pension-plan RMD over to the IRA because RMDs are not eligible for rollover. This results in an excess contribution to the IRA that is subject to penalty unless resolved. You have until the due date of your 2018 tax return, including extensions, to obtain a return of the excess contribution from your traditional IRA.
What is the code in box 7 of the Form 1099-R from the pension plan?
