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3.2.5.2.3 Processing the Change Participant Control Level Response PDU

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The receiver of the Change Participant Control Level Response PDU (OD_PARTICIPANT_CTRL_CHANGE_RESPONSE) (section 2.2.4.4) MUST first validate the common header for consistency (section 3.1.5.1). If the PDU size is not long enough to contain all the fields in the message, the connection SHOULD be terminated.<22>

After validating the common header, the receiver SHOULD verify that the ParticipantId field is valid.

The participant SHOULD check the ReasonCode field to determine why the change participant control level request was accepted or rejected.