Error: Internal Server Error 500

Applies to:

• Velixo NX
• Velixo Classic
• Acumatica, Cegid, Haufe x360, JAMIS Prime, MYOB Acumatica 

Symptom

When defining a connection to a tenant in Acumatica, CEGID, Haufe x360, JAMIS Prime, or MYOB Acumatica, one of the following error messages is displayed:

 

Text from the Error Message:

Internal server error (500). The server encountered an
internal error or misconfiguration and was unable to
complete your request.

or

Unexpected error while processing the response. Please
ensure that you can connect to Acumatica and that the site is
not under maintenance.

or

Failed to read from URI

(500) InternalServerError

Potential Causes

Tenant Name

Newer versions of the ERP, disallow Tenant names from containing "special" or "reserved" characters such as  & < > * % : ; \ / ?

However, certain older versions do allow those characters.  When attempting to define a Velixo connection to a tenant which contains one or more of those characters, an error results (due to problems when accessing the data through the ERP's OData feed).

Generic Inquiry Names

It is also possible to use those special characters when naming Generic Inquiries in the ERP.

For example, here we see a generic inquiry whose name ends in a period:

Just the presence of such an inquiry can make it impossible for Velixo to establish a connection to the ERP.

Resolution

Within the ERP, rename any such tenant or generic inquiry so that it does not include any special characters.

e.g.,