In Dynamics 365 Finance and Supply Chain there are specific tables and setup needed so users can add attachments to “Posted” Accounts Payable Invoice Journals.
Setup Parameters for posting AP Invoice Journals
1. Go to Organization Administration>Document Management> Document management parameters
2. Select the “General” Tab
3. Change to “Yes” on the “Use Active document tables”
Note: If set to No, the default behavior is to allow attachments to all tables except posted documents/journals, which are disabled by default. Setting the table up in Active document tables is what allows attachments for posted records.
4. Next Go to Organization Administration>Document Management> Active Document Tables
5. Click “Update”
Note: The Reference table 11709 “Ledger journal table” needs to be selected
6. Click Edit and select the table name “Ledger Journal Table” under the “Always enabled” field
7. Click Save
“New” button enabled