The portal will only accept XML files that have been generated in line with the XML Schema Definition as published by the IRS or OECD depending on the reporting being done.
The FATCA specifications can be found at this link.
The CRS specification can be found at this link.
The CbC specification can be found at this link.
The Bahamas Competent Authority AEOI Portal and Enrollment for CRS and FATCA reporting can be accessed through the internet at the following websites: