Error Code 21920253 “Payment Instructions is not supported for eBay managed payment and has been dropped from the payment policy.”
You receive this error if your eBay payment policy is invalid. If you see this error for one of your products in StoreAutomator, you need to check your payment policy in case of outdated or not selected in StoreAutomator.
1- Select your eBay channel and go to “Channel>Channel Settings>API Connection”.
2- Select the correct payment policy and save the settings.
3- Select the issued product, send auto (All types) update and sync the channel.