So, when the screenshot was we had only 2 belts inside, with barcode on each.
Then make test with 13 or 14 tapes and all throw the same error, use LTO 2 and LTO 3 for testing and send all error, the test was also done with a tape with bar code and the same.
Tests have been done with drivers and despite trying different scenarios the error can not be corrected.
The problem is that they have also done tests with Symantec Backup Exec and have not had any problems with the administration of the library, for tests with UltraBac has been completely uninstalled Symantec including record-level, so somewhat complicates stage.
I wonder if they have an alternative solution.