At this time, when posting a check and linking the name of the provider, it automatically sets the link as vendor
Some checks use the party as the provider on the value entry as that is who the check is going to, however, the name is set as customer in QuickBooks Online since they are the party on the case
This causes issues with posting the check as once the name is linked as vendor, it will not recognize it when posting since in QB, the name is customer and already linked.
Please make it so you can choose whether to link the name as vendor or customer when posting a check.