> For the complete documentation index, see [llms.txt](https://docs.dispel.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dispel.com/integrate-and-administer/billing/delivery-and-acceptance-documentation.md).
# Delivery & Acceptance Documentation
Dispel produces two contracting documents — the Delivery Certification and the Acceptance Certification
## Overview
When a Dispel service period activates, Dispel issues a Delivery Certification recording what was delivered and on what date. When your organization acknowledges receipt, Dispel produces an Acceptance Certification capturing that acknowledgment.
**What Dispel provides**
* A **Delivery Certification**, issued on the service period start date and emailed to the designated billing contact.
* An **Acceptance Certification**, generated when a billing-authorized user acknowledges the delivery in the Dispel customer portal — or, if no acknowledgment is received within 30 days, issued under the deemed-acceptance terms of the Enterprise Subscription Agreement.
* Document-integrity features (SHA-256 payload hash, RFC 3161 timestamp token) and a verification URL printed on each document.
{% hint style="info" %}
The Delivery and Acceptance Certifications are separate from your invoice. They establish that the service was delivered and accepted; the invoice is the document for payment.
{% endhint %}
#### Delivery Certification
Dispel generates a Delivery Certification on the service period start date and emails it to the designated billing contact(s).
#### Acceptance Certification
Dispel generates an Acceptance Certification when a billing-authorized user clicks **Acknowledge** in the Dispel customer portal. If no acknowledgment is received within 30 days of the service period start, an Acceptance Certification is issued under the deemed-acceptance terms.
## Frequently asked questions
How are these documents different from my invoice?
The Delivery Certification is Dispel’s record that the service was delivered. The Acceptance Certification is your organization’s record that the service was received.
Where do I see the documents Dispel has issued for my account?
On the Billing page in the Dispel customer portal, alongside the matching service period.
How to I change who can approve Acceptances Certifications?
Acceptance Certifications may be approved by any organization admin in your Dispel account.
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