The client needs to capture five additional fields during the project cost adjustment process.

We have a client requirement in Oracle Fusion Project Portfolio Management where cost adjustments are performed. The client needs to capture five additional fields during the adjustment process, each requiring more than 150 characters. Could you please advise on the best approach to capture and store these extended text fields. Once the adjustment transaction is created capturing all of these fields it needs to be sent to project manager for approval. Additionally, one of the fields requires complex validation logic that compares the accounted date with the system date and applies timeline-based rules. Please suggest how this type of validation