Payout change lock must be a whole number of days (0 to disable)
Admin settings save rejected the payout change lock value (400).
Why this happens
Non-integer, negative, or empty lock-days field. 0 disables the lock; otherwise use whole days only.
Diagnose and fix
1. Enter an integer ≥ 0 in Payout change lock; save.
2. Use 0 to turn the lock off.
3. See the Payout change lock Help article for what the setting does.
4. Not a member payout request error.