Double check the AP Last Reference Number used.
Try unchecking the AP - Suggest Next Number
Or double check number sequence settings.
Make sure there isn’t a duplicate of that reference number. 

Also if Automation Steps has been customized in any way, it’s possible there’s an error there.  

Can you get to it another way?  

If it’s only from that screen, edit the GI and double check the navigation settings.  

Hi @rmontana  Have you made any changes to the GI OR Have you done any customizations in the Checks and Payments screen?

None so far.

Hi @rmontana 

Please send the Trace log (Tools > Trace,  expanded details ), will see if that can help identify the root cause.

Regards,

Please see screen capture below

Hi @rmontana,

The encountered error could be caused by the known issue described in the KB article below:

Please, refer to the Troubleshooting Steps section of the mentioned article to find, if the diagnostic GI will return the prepayment document that cannot be open.

Thank you but i can’t access the link. can i request an access to this article ?

Hi @rmontana,

KB articles content only available for customers and partners having valid contract with us.

As about the issue with opening the prepayment, you may also try the following:

• Open the Checks and Payments (AP302000) form, select Type = Prepayment and select AP002803 in the Reference Nbr. field. Will there be any errors upon opening the prepayment using this option?
• Check the Branch associated with the prepayment document and see if your user has access to this branch.

Deleted

Yes there is an error. Please see image below

Hi @rmontana,

This error message will require technical analysis within a support case, since based on the provided screenshots the encountered issue looks like a data-specific one.

Hi @rmontana - were you able to find a solution for your issue? Thank you!