We have a strange problem with the biling in our PMS, the BBSM send the "traps" with the date and room for biling in the PMS, and when arrives to the day 6 in month 6 change the format of the date as shown:

Correct: DA[AAMMDD] From 1 to 6 and 13 to 30

Incorrect: DA[AADDMM] From day 6 to 12.

The problem dissapears at day 13 of the month (there aren?t month 13 int the age), but int the range of days 6 to 12 the PMS cannot biling because que format of the date is incorrect.