DB05 – ‘Call barred by destination operator’, or ‘Rejected by destination operator’ – Sinch

DB05 is a SMS 365, enterprise service status code meaning ‘Call barred by destination operator’ or ‘Rejected by destination operator’, which indicates that the MT message could not be delivered and cannot be retried.

Possible Reasons for a DB05 response

There are a number of reasons why the DB05 status code is returned, some of which along with the actions that should be taken, are detailed below:

Category	Description	Action
End User	The end user’s operator has restrictions set on the account based on the tariff and the associated terms and conditions of the account.	The end user should contact their network operator, to either remove the restrictions in place, or change the contract to a tariff which permits the SMS MT services. For example, a daily or monthly usage limit has been set
End User	MSISDN is barred	The end user should contact their network operator, to either remove the restrictions in place. The MSISDN may be blacklisted or not permit certain SMS based transactions
End User	The end user does not have short code messaging enabled on their account, or is using an MVNO service of an operator that does not support messaging	The end user should contact their network operator to either enable the short code messaging. Where the operator is a MVNO, the end user should confirm that their operator has no contractual restrictions in place with the backbone operator - i.e., The operator used by the MVNO to supply its products and services to end users.
Customer	ALL MT traffic using a specific service number with a specific US operator have returned DB05	The customer should supply the Campaign ID when submitting the MT to Sinch, when sending traffic to US based end users.
Operator	Rejected By operator due to the campaign not being active on the operator network	Raise support ticket with the Sinch Support team, detailing the OrderID, MSISDN and date/time the MT message was sent, so that the support team can investigate.

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