Attachment icon is grayed out in AP invoice inquiry form

HI Oracle Ocean,

I have 2 responsibilities for AP, 1) XX AP Super User 2) XX AP Inquiry

In responsibility XX AP Super User, we can query the invoice number via   form function 1) invoices (entry form)  2) View invoices (query form).

Here I am able to query the invoice and see the attached file (attachment icon is enabled) to the invoice.

But from the responsibility XX AP Inquiry, when I query the invoice number on form function "View invoices" (query form),

the attached file (attachment icon is grayed out) is not displayed.

I tried this way as mentioned in the doc - APXINWKB Entry Screen How To Enable The Attachments Icon ? (