These are Result Codes that communicate success (200) or failure (400) at the operation level: no source account, too many subentries, etc.
RESULT CODESTELLAR PROTOCOL CODE
The inner object result is valid and the operation was a success.
There are too few valid signatures, or the transaction was submitted to the wrong network.
The source account was not found.
The operation is not supported at this time.
Max number of subentries (1000) already reached
Operation did too much work