RegTAPFeatureMissing

exception pyvo.registry.rtcons.RegTAPFeatureMissing(reason=None, label=None, url=None)

Raised when the current RegTAP server does not support a feature needed for a constraint.

This could be that it is missing some ADQL feature indispensible to write that constraint, or because it is missing a table or column.

To recover, choose another RegTAP service. Search constraining datamodel="regtap", and then use pyvo.registry.choose_RegTAP_service with a TAP access URL discovered in this way.

Parameters:

reasonstr

a message describing the cause of the error. This should be set to the content of the INFO error element.

labelstr

the identifying name of the error. This should be the value of the INFO element’s value attribute within the VOTable response that describes the error.

urlstr

the query URL that produced the error