Assembly / HLASM · Abend code

System Completion Code S204

What does System Completion Code S204 mean in Assembly / HLASM?

A GETMAIN request failed because the system could not obtain enough real storage to back the minimum number of virtual storage manager cells needed to expand the Local System Queue Area (LSQA) cell pool. It reflects a real-storage constraint at the LSQA/SWA level rather than an ordinary application coding mistake.

System Completion Code S204z/OS · HLASM

Condition

A GETMAIN request failed because the system could not obtain enough real storage to back the minimum number of virtual storage manager cells needed to expand the Local System Queue Area (LSQA) cell pool. It reflects a real-storage constraint at the LSQA/SWA level rather than an ordinary application coding mistake.

Fix

Treat this as a systems-programming issue rather than a REGION= tweak — check for excessive subtask or module proliferation driving up LSQA usage, and consider splitting the workload or scheduling it when the LPAR is less contended.

Related abend code