How to single thread an incoming process from a specific PNODE on C:D z/OS

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If you wish to single thread a specific incoming process from a remote trading partner on C:D z/OS  then one option is the following.

Your remote trading partner (the PNODE) will use the existing adjacent node definition for your node and use the max sub parameter of the PARSESS parameter in their NETMAP.  

Example: PARSESS=(4,2)   where 4 specifies the maximum number of simultaneous DTF-to-DTF sessions that the local Sterling Connect:Direct node can initiate with this adjacent node.

Your remote trading partner would then code CLASS=4 on the specific incoming process to your node the SNODE.

Any of these specific processes that are sent in parallel from the remote trading partner (PNODE) to your C:D z/OS (SNODE) will then execute one at a time. The parallel processes that are waiting to execute will show WA WC in the queue and will execute single thread once the previous process has completed.

Note: This will require coordination with your remote trading partner.