The Exchange Systems performs the formal checks necessary on each FatturaPA file or archive file to guarantee they can be correctly forwarded to the addressee.

It is advisable to subject the FatturaPA file to a prior check by the Check the FatturaPA application.

Each error is identified by a code and a description. The error code is given in the rejection notice sent to the transmitter.

For more information about formal check look at the page  documentation of Exchange System