There are several "machine_name" form fields in the UI. These all need valid "exists" function callbacks.

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mpotter created an issue. See original summary.

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mpotter commented
Status: Active » Fixed

Fixed in bb6c40e.

  • mpotter committed bb6c40e on 8.x-3.x 
    Issue #2557397: Missing 'exists' function for machine_name fields

Status: Fixed » Closed (fixed)

Automatically closed - issue fixed for 2 weeks with no activity.