3rd Party Provider - HMRC - Degraded Performance

Our third-party vendor, HMRC, has confirmed that the issue has been resolved, and HMRC MTD (Making Tax Digital) functionality for Sage Partner Edition (VAT Centre), Sage Personal Tax (Personal Tax Viewer), Sage Business Cloud Accounting UK (MTD VAT Submissions), Sage X3 Single Tenant, Sage 200 Standard (UKI), Sage 200 Professional SPC (UKI), Sage Intacct, Brightpearl are performing as expected.
We will continue to monitor closely.

We identified an intermittent issue in the UK preventing customers from using HMRC MTD (Making Tax Digital) functionality in the products listed below:

Sage Partner Edition (VAT Centre)
Sage Personal Tax (Personal Tax Viewer)
Sage Business Cloud Accounting UK (MTD VAT Submissions)
Sage X3 Single Tenant
Sage 200 Standard (UKI)
Sage 200 Professional SPC (UKI)
Brightpearl
Sage Intacct

Customers will be presented with an internal HTTP 500 error when attempting to submit.
We are engaged with our third-party, HMRC, waiting for updates.