Server Error: Could not reach the Mekorma Validation server.
When you receive the following message, it is an indication that the handshake between your server and the validation services server could not complete.
Server Error:
Could not reach the Mekorma Validation server. Please review the error Logs One or more errors occurred.
One or more errors occurred.
An error occurred while sending the request.
The underlying connection was closed: An unexpected error occurred on a send.
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
An existing connection was forcibly closed by the remote host
Could not reach the Mekorma Validation server. Please review the error Logs One or more errors occurred.
One or more errors occurred.
An error occurred while sending the request.
The underlying connection was closed: An unexpected error occurred on a send.
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
An existing connection was forcibly closed by the remote host
These are the most common reasons that this happens:
1 - A firewall on the GP server. Please whitelist this URL: https://mekapimanagement.azure-api.net/MekormaValidation
2 - A version of TLS earlier than 1.2 is being used. Even if you have TLS 1.2 installed, you must explicitly disable earlier versions of TLS. This article from Microsoft explains how to do so: https://techcommunity.microsoft.com/blog/exchange/exchange-server-tls-guidance-part-3-turning-off-tls-1-01-1/607898