# X_ADMIN_ACTION_DUPLICATE

## Means

two registered admin actions carry one `name`

## Typical cause

the same action name declared on two entities, or on an entity and the global toolbar. Refused at `defineAdmin`, not at the first call: the name is the MCP tool name, the default label key **and** the key `callAdminTool` resolves a handler by, so a collision is a call that succeeds against the wrong action and reports nothing

## Fix

rename one in `defineAdmin`'s `actions` — `name: '<entity>.<action>'` — so the bare name belongs to one of them; the cause names both holders

[Admin and manifest](/error-codes#admin-and-manifest)