ACH file locked in Premium

Have a client on Sage 100 Premium 2023.1 who keeps getting an error message when attempting to add new ACH information for a vendor if anyone else is in Vendor Maintenance.  I assume this isn't normal - that two people on two different vendors should be able to update their respective ACH info at the same time?  And actually, this is just someone else in Vendor Maintenance, NOT someone else in ACH Maintenance.