We should not receive Void TAP file or TAP file with only SMS from Lao Telecom.
You should send us TAP file with all scenarios tested in the IR24 test book as enclosed.
Please check the enclosed e-mail from my TADIG team. The problem in your previous TAP sending was that Lao Telecom did not apply the correct charging.
There was a difference between charging in the AA14 and charging in the TAP file.
So Lao Telecom has to apply the correct charging on all scenarios tested in the IR24 test book and send us the TAP files with all the tested scenarios with correct charging.
Please let me know if my explanation is clear enough. If not please contact me again.