I am confused on how changing a supplier from non-adjusted due date to adjusted due date will affect the information they are entering at acknowledgement.
If a Supplier is on Non-Adjusted Due Dates
For non-adjusted due date suppliers, buyers are usually mainly concerned about when an item will be delivered. These are usually suppliers where shipping times are pretty standard and they are not having to deal with shipping methods like boat or train.
For these suppliers, there does not have to be a ship date set when the order is acknowledged. If the buyer has provided a due date that they would like to receive the items, that date would appear in the due date field. If a supplier needs to propose a change to the due date field, they can proposed a new due date using the propose change action. Supplier's proposal will be documented in the Vendor Commit Column.
If a Supplier is on Adjusted Due Dates
For adjusted due date the suppliers, buyers are mainly concerned about the time between shipment and delivery date. These would mainly be where shipping is relatively uncertain, usually when boat and trains are the primary method of shipping.
For these suppliers, a ship date has to be set at the time of acknowledgment and the supplier will be requested to set the PO ship date, this date will be recorded in the vendor commit date on the PO Dashboard. The acknowledgement will not be allowed to save unless this field is filled in.
Users set as the Admin on the account can enable suppliers to use Adjusted Due Date if their site is set up for this capability. This feature is vendor specific and enabled on the Active Vendor tab under Account Settings for the Admin. Read more here.