| Excessive usage detected | This means that that phonenumber has received too many similar messages in a short time period | No |
| Quota exceeded! | Too many messages sent during the last hour/day/month. Contact support to increase it if neccesary | No |
| Client not allowed to send messages on CPA enabled network. | You attempt to send a payment message (tariff > 0) without having an account with the correct permissions. | No |
| A valid tariff must be specified. | Invalid tariff. Must be between 0 and 500 | No |
| Client not allowed to send GAS SMS messages. | You attempt to send a payment message (tariff > 0) without having an account with the correct permissions. | No |
| Invalid ServiceCode. | Service code does not match spesification for service codes | No |
| Total monthly premium charge limit to this subscriber has been exceeded | Receiver has exceeded allowed SMS payment amount per month | No |
| Billing platform is unavailable | Internal error | Yes |