An apparatus for a new radio, NR, network, the apparatus comprising: processing circuitry; and memory (204, 206), the processing circuitry to configure the apparatus to operate as a performance data streaming service, PDSS, producer (606; 702), the processing circuitry configured to: establish a streaming connection between the PDSS producer (606; 702) and a PDSS consumer (608; 704), the streaming connection containing at least one stream; after the streaming connection is established, support: a getStreamInfo operation to get information for one or more streams of the streaming connection from the PDSS consumer (608; 704), an addStreamInfo operation to add information for one or more streams to the streaming connection to the PDSS consumer (608; 704), an updateStreamInfo operation to update information for one or more streams of the streaming connection to the PDSS consumer (608; 704), or a deleteStreamInfo operation to delete information for one or more streams from the streaming connection to the PDSS consumer (608; 704), and send a getStreamInfo request to support the getStreamInfo operation, the getStreamInfo request having a list of identifiers for which information for each of one or more streams to be returned, characterized in that the processing circuitry is further configured to receive a getStreamInfo response to the getStreamInfo request, the getStreamInfo response indicating a status of failure of the getStreamInfo operation for one or more of the identifiers which are unknown and an indication that the failure is because the one or more identifiers are unknown. establish a streaming connection between the PDSS producer (606; 702) and a PDSS consumer (608; 704), the streaming connection containing at least one stream; after the streaming connection is established, support: a getStreamInfo operation to get information for one or more streams of the streaming connection from the PDSS consumer (608; 704), an addStreamInfo operation to add information for one or more streams to the streaming connection to the PDSS consumer (608; 704), an updateStreamInfo operation to update information for one or more streams of a getStreamInfo operation to get information for one or more streams of the streaming connection from the PDSS consumer (608; 704), an addStreamInfo operation to add information for one or more streams to the streaming connection to the PDSS consumer (608; 704), an updateStreamInfo operation to update information for one or more streams of the streaming connection to the PDSS consumer (608; 704), or a deleteStreamInfo operation to delete information for one or more streams from the streaming connection to the PDSS consumer (608; 704), and send a getStreamInfo request to support the getStreamInfo operation, the getStreamInfo request having a list of identifiers for which information for each of one or more streams to be returned, characterized in that the processing circuitry is further configured to receive a getStreamInfo response to the getStreamInfo request, the getStreamInfo response indicating a status of failure of the getStreamInfo operation for one or more of the identifiers which are unknown and an indication that the failure is because the one or more identifiers are unknown.