Overview
This audit ensures that the page does not use any deprecated Google Publisher Tag (GPT) APIs. Deprecated APIs are googletag methods or configuration options which are no longer maintained or documented. As these APIs may be partly or wholly removed from GPT, their use is discouraged and unpredictable behavior could come from their continued use.
Recommendations
Observe the details of the audit to see which deprecated APIs the page is using and remove their usages. Many deprecated APIs will have a supported alternative which can be used instead.
Check the official GPT release notes for more information on deprecated APIs and suggested alternatives.
More information
This audit checks console messages for the presence of any warnings or errors coming from GPT which are related to deprecated or discouraged APIs.