“Mailbox Size exceeds target quota ” when issuing new-moverequest

Scenario:  When issuing a new move request, you receive the following error:

Mailbox Size <size> exceeds target quota <size>

Solution:  Temporarily lift the ProhibitSendReceive quota size and run the new move request again. You can set the ProhibitSendReceive quota to unlimited OR to a higher value than the current mailbox size.

Get-mailbox <alias> | Select Prohibit*

Set-mailbox <alias> -prohibitsendreceive unlimited.

If the mailbox is 50MB,  you could also run this:

Set-mailbox <alias> -prohibitsendreceive 55MG.