You don't have access to this document record" Error in ICP Approval Notification

Summary:

We are in the process of implementing the ICP plan in Oracle HCM. As per the ICP requirements, users will attach documents within the ICP plan, and upon submission, the transaction will go to the first-level approver for approval. However, when the first-level approver tries to open the notification and view the attachment, they encounter the error message: "You don't have access to this document record."

I have already provided the following privileges to the custom roles for the approvers:

Manage Person Documentation

Manage Person Documentation by Manager

View Person Documentation

Despite these settings, the approvers are still encountering the same error when trying to access the attachment.