Follow the below steps to enable invoice importing/ activate "Import Invoice" button for users in AHO:
1. In AHO, go to Tools > Security Console
2. Choose Setup and Maintenance
3. Go to Manage administrator profile values (Can use the search option as below)
4. Enter Profile Option code = DEFAULT_ORG_ID > Search
5. Under the DEFAULT_ORG_ID section, select " User " in Profile Level field, "username" in User Name field and “Departmental” in the Profile Value field
Or click on “+” sign to add the user to the list with above details if already not existing.
6. Save and Close