Switching 401 (k) provider from TIAA-CREF to Mass Mutual

Does anyone currently have Mass Mutual as their 401 (k) provider ?

We are switching from TIAA-CREF to Mass Mutual and Mass Mutual has asked for data extracts from S3

They have provided us the data structure for the extracts

I am wondering if there is a standard extract from Lawson S3 to Mass Mutual or other benefit providers ?

For TIAA-CREF, we engaged our managed solutions provider to do the extract

Trying to figure out if we need to go the same route or use existing interface for Mass Mutual if one already exists

Thanks,

Srikrishnan.K.P.