# X_DRIVER_CAPABILITY_MISSING

## Means

a custom driver declares a capability its raw repo does not implement

## Typical cause

defineDriver({ capabilities }) names a capability (meta.capability) whose method the repo() factory does not return, or transactions with no transactor()

## Fix

`add the method the cause names to the object repo() returns in defineDriver({ … }), or drop the capability from capabilities`

[Entity and database](/error-codes#entity-and-database)