Author Contract Terms Button Enabled but OAF Page Does Not Open in Oracle EBS R12.2

I am facing an issue with Oracle E-Business Suite R12.2 Purchasing and Procurement Contracts while trying to author contract terms on a Standard Purchase Order.

I created and approved the following clauses in the Contract Terms Library:

• Delivery and Acceptance — 15 days
• Warranty — 12 months
• Inspection by ABC
• Late Delivery Penalty

I also created and approved the contract template:

ABC Standard Procurement Terms

The template is associated with the Standard Purchase Order document type.

My next step is to apply this approved contract template to a Standard Purchase Order.

Steps performed

1. Opened the Purchasing responsibility.
2. Purchase Orders → Purchase Orders
3. Created and saved a Standard Purchase Order.