Search failure.
VTAM® hint: This sense code is set by the PLU's network node server when resource verification reduction could not be satisfied for a request initiated by the PLU control point to obtain the RSCV from the network node server.
VTAM hint: VTAM was unable to successfully locate the dependent LU requester (DLUR) node in order to obtain the necessary DLUR endpoint transmission group (TG) vectors. The current session setup will fail. Verify that connectivity exists between the node that issued the sense code and the DLUR node.
VTAM hint:
This sense code is issued when a node determines that it might have to retry, resubmit, or redirect a search, but it cannot allocate a procedure-correlation identifier (PCID) Modifier slot, because all 20 half-byte slots have already been allocated. This indicates that the search has been exhausted (20 nodes have already allocated slots without finding the DLU). There is currently no recovery action architected or implemented to recover from this situation.
The PCID Modifier slots differ from the SSCP visit count in that the SSCP visit count is decremented by every SSCP on the session setup path. The PCID Modifier slots are not allocated by every SSCP, only those that might have to perform retried, resubmitted, or redirected searches.