After configuring Email Receipt for Signature Transaction, the receipt records are not sending and are being placed in the saved_vod status.
Object Level Security (OLS) and Field Level Security (FLS) have to be set exactly as the guide states for Email Receipt for Signature Transactions to work. This scenario occurs when a portion of the required OLS or FLS is skipped.
Ensure the Approved Email Admin and Standard User meet the below minimum OLS for Email Receipts for Signature Transactions to work:
Email Receipts are enabled by Profile as well as by Object. For each transaction object that needs Email Receipt functionality, the end-user needs at least Edit permission. The Approved Email Admin needs at least Read permission to the following fields:
CRM Documentation: Approved Email Receipts for Signature Transactions