Question: What triggers the ProSe Function to send a DIAMETER_ERROR_NO_ASSOCIATED_DISCOVERY_FILTER (5630) result code in a local or visited Public Land Mobile Network (PLMN)?
Option 1: When a User Equipment (UE) attempts to announce its presence without a valid subscription.
Option 2: Upon receiving a ProSe Application ID name with no associated valid Discovery Filter.
Option 3: If the UE's location cannot be determined for proximity services.
Option 4: When the ProSe Function itself experiences an internal error processing a discovery request.
Explanation: This is correct because the DIAMETER_ERROR_NO_ASSOCIATED_DISCOVERY_FILTER (5630) result code is sent when there is no valid Discovery Filter associated with the received ProSe Application ID name, relating to the management and association of discovery filters with application IDs.