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Informix Error -23515: CM error: Cogroup already exists.

Cause and resolution

CM error: Cogroup already exists.

An attempt to create a new cogroup failed because the name of the new cogroup is already being used by another cogroup. Choose a cogroup name that is not already in use and resubmit the request.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-23515 fires when a new cogroup's requested name is already used by another cogroup — per the official guidance.

  1. A cogroup already using the requested name, per the official guidance — the direct, only cause.
Solutions / Resolution
  1. Choose an unused cogroup name and resubmit the request, per the official guidance.
Examples
N/A

No specific triggering statement is documented beyond a name collision.

Diagnostic Checks
  1. Check whether a cogroup already uses the requested name, and choose a different one.
Related Errors / Related Topics
  • -23514 — "CM error: No such cogroup." The mirror-image error, on a cogroup name not found rather than a name collision.
  • -23517 — "CM error: Cannot drop or alter a system defined cogroup." A related cogroup-restriction error, on the system-defined cogroup_all rather than a name collision.

A cogroup with the requested name already exists — choose a different name.