Receiving Record type is marked as synced, but its data has not yet been synced or its existing synced data has been invalidated. Contact your system administrator Error on Record.

Can you check the date formats are coming correct? Are the number of columns are more then 50 in a row? Lastly check the are you are getting the native Appian dataType for the data source. 

Hi Aditya,   Any resolution on this ticket?   How did you resolve this one?   We are having similar issue and trying to figure out.  The error is "The records could not be updated because one or more record types in the input "Records" have not been synced or existing synced data has been invalidated. Invalid record types"

I had to raise a ticket with appian support for them to get it resolved.

I had to raise a ticket with appian support for them to get it resolved.