This article discusses the ability for the IDMSINTC/IDMSINTL interfaces to connect IDMS to a CICS region on a different LPAR.
Can the IDMSINTC and IDMSINTL interfaces be used to connect IDMS and CICS address spaces on different LPARs?
CA IDMS, all supported releases.
The IDMSINTC and IDMSINTL interfaces use an SVC to connect CICS to IDMS and so the two address spaces much be on the same LPAR.
The recommendation is to set up a "routing" IDMS CV in the same LPAR as CICS and use DDS (with NODEs using communnication method VTAM, TCP/IP or CCI) to send transactions to the desired CV.