RMD error

I have two accounts with TIAA, The gross distribution in one 105,439, other 13,454. The basis is 1,997,398 using 16.8 divisor and age 84. resulting in a RMD of 118,892. However when I file  , I am told that I am 5439 short and have bee assess a penalty of 1360. I know my numbers ae correct. I is interesting that the alleged shortfall (5439) is the same as the last for digits of the first distribution noted above. What do I do to remedy this error?

Thank you.