Attached are the instructions for linking the AP Transaction Open file (which contains the PO# from the AP Transaction Entry Screen). However, if you follow these instructions and it doesn't work, Recreate the Reports.dic. Pull in the new unmodified check format and start over. Test bringing the PO field on. That worked perfectly for me!
ADD PO # TO CHECK WITH STUB ON TOP AND BOTTOM GRAPHICAL:
First, create a relationship between the PM Payment Apply to Work and the PM Transaction Open. The PM Transaction Open file contains the PO number.
1. Go into RW and open the Check Remittance.
2. Click on the Tables button on the toolbar, NOT the Tables button on the Report Definition
3. Select the PM_Payment_Stub_Duplicate file from the Tables window and click Open.
4. Click on the Relationships button and then New in the Table Relationship window.
5. In the Table Relationship Definition window, click on the button with three dots. Select the PM Transaction OPEN File.
6. Select PM_Transaction_OPEN_Key 2 as the secondary table key and pull in the following selections in this
order:
Apply to Document Type
Apply to Voucher Number
7. Click OK and back out of all the windows, saving your changes as you go.
8. Get back into the Report Definition window and click on the Tables button in that window.
9. Click on PM Payment Duplicate Stub and then choose New.
10. Select the PM Transaction OPEN File and then OK.
11. Click on Layout and in the toolbox open up PM Transaction OPEN. Find Purchase Order Number and drag
it onto the check, making sure it is in the body.
12. Save your changes and give security to the modified check in Dynamics.