If you have billed a 03.03A service code and your claim has been paid at zero due to:

Schedule Of Benefits Payment for your claim was reduced or refused in accordance with the applicable benefits schedule. To view the benefits schedules, go to the Alberta Health and Wellness website at www.health.alberta.ca. [Code: 63A]

This is likely to do with the functional centre the claim was submitted with. Per Alberta Health the 03.03A can only be billed from EMRG or EXRM functional centres.