Retirement tax questions

I have four retirement accounts from four different jobs—two 457(b) plans and two 401(k) plans. I was under the impression that I could max out each of them individually. While working on my tax return, I noticed a message indicating that I overcontributed $20,000 to my 401(k) accounts. However, there doesn’t appear to be any overcontribution to the 457(b) plans.Why?

 

Job 1:  $23000 for 457B

Job 2: $23000 for another 457B

Job 3: $23000 for 401k

Job 4 : $20000 for 401k