We got the space issues when testing the xml files with huge record count (Which is Table count) and also huge repeat count value .
Sometimes it fails for 10000 table count value with below error in TDMGenerator logs.
"Could not allocate space for object in database because the 'primary' filegroup is full."
TDM all versions
This is an issue with database/table space limitation. With huge record creations while generating the xml data, database is unable to allocate the space.
Work with the database administrator and ask them to allocate more space to the database connection which you are using for xml tables.