14. Re-directing an MSISDN
When a mobile number (MSISDN) is transferred to a new End User, a Premium Rate for Subscription-Type Services and the actual subscription relationship with the previous End User shall automatically cease prior to transfer.
At Danish Mobile Companies, an MSISDN will be blocked for reissue for a period after an End User has terminated their agreement without the MSISDN being transferred to a different Mobile Company.
If there are Subscription-Type Services which are sent at a frequency of more than three (3) months, a Content Provider shall obtain renewed acceptance of the Premium Rate from the End User prior before the provider can send any item involving a Premium Rate.
If there are Subscription-Type Services which are sent at a frequency of less than three (3) months, a non-existent MSISDN might result in various error messages (API return codes) from the Mobile Company.
The table below contains a summary of the API return codes used and the way in which a Content Provider must react to these. Where an Aggregator intermediate link is present, this is obliged to re-direct the information to the actual Content Provider:
| Error code | Generic description | Mandatory reaction from Content Provider (via Operators) |
| 5001 | The customer does not exist | Cancel the service/subscription and stop charging. Delete the MSISDN in the database |
| 5002 | Blocked for Premium Rate services (standard operator service) | Cancel the service/subscription and stop charging. |
| 5002 | Blocked for physical goods and services | Cancel the service/subscription and stop charging. |
| 5003 | Blocked because balance control limit has been reached | “Try again later” |
| 5003 | Blocked because usage control limit for Premium Rate services has been reached | “Try again later” |
| 5003 | Prepaid – not enough money in the account | “Try again later” |
