We are currently working on the configuration of purchase order approval workflow on Sandbox. We have completed the setup of approval rules and all associated custom search criteria as required.
Nevertheless, during our system testing, we found that the Submit for Approval button is completely missing on the PO interface. We are unable to trigger the approval submission process due to this issue.
We have double-checked the existing settings but failed to identify the root cause. Is there any specific configuration need to be pay attention?
Your kind assistance would be highly appreciated.