The following steps are used to generate match responses.
Match the key match attributes contained in the Identifier of the C-FIND request against the values of the Key Attributes for each worklist entity.
If there are no matching keys, then there are no matches, return a response with a status equal to Success and with no Identifier.
For each entity for which the Attributes match all of the specified matching key attributes, construct an Identifier. This Identifier shall contain all of the values of the Attributes for this entity that correspond to the return keys specified in the C-FIND request.
Return a response for each remaining Identifier.
Table CC.2.5-3 defines the Attributes of the Unified Procedure Step Information Model, the requirements for key matching, and the requirements for return keys.