An outbound CMIP string is a CMIP string that is being sent from an application program to some destination.

In general, any error found in a request (confirmed and unconfirmed) or response in the originating SMAE is reported to the invoking application program by an asynchronous CMIP services API error code as a service error.

In the case where the destination of the CMIP string is on the same system as the origin of the CMIP string, some differences apply. If the CMIP string arrives at the presentation layer of CMIP services before an error is detected, the CMIP error is not reported as an API error code. In this case, once the CMIP string has passed the presentation layer and is back in the SMAE, the SMAE does not distinguish between same-system errors and different-system errors. The error in this case is handled as specified in the following list for inbound CMIP strings received from other systems. Refer to Overview of CMIP services API functions for a list of these API error codes.

The system that originated the outbound request can also receive errors detected on the destination system in the form of RO-REJECT(U), RO-REJECT(P), and RO-ERROR. These error types are passed to the application program if enough information is available for routing.