From PR #6126, the two error messages didn't make it clear what the contributor needed to do to address them.

1. ValidatorRulesMakeSense extensions require an additional tag

This means there is a missing also_requires_tag. It would be good to explicitly state that and also mention which tag spec is offending here.

Possible rewording: ValidatorRulesMakeSense Tag Spec {tagspec} is missing the also_requires_tag: {Tag Spec or Spec Name}

2. ValidatorRulesMakeSense AMP-IZLESENE must be whitelisted for AMP4ADS

This means that this extension has not been accepted (whitelisted) for AMP4ADS creative format documents. This happens either because there is no explicit html_format or (as in this case) there is an explicit html_format: AMP4ADS. Since it's not whitelisted it must either apply to be whitelisted, add html_format: AMP or remove html_format: AMP4ADS.

Possible rewording: ValidatorRulesMakeSense Tag Spec {tagspec} has html_format either explicitly or implicitly set for AMP4ADS but {tagspec} is not whitelisted for AMP4ADS.

@Gregable @powdercloud thoughts?