00007: Layer's definition query is invalid
Your project contains a layer with an invalid definition query. The query may be invalid due to the schema of the data source changing or it may be using incorrect syntax.
Solutions
Do one of the following:
Fix the syntax of the definition query. For more information, see the SQL reference for query expressions used in ArcGIS.
Add all the features back into the layer display. To do this, delete the query.
Remove the layer from the map.
Additional information
If you want to display features with certain attributes in a feature layer, you can apply a definition query to the layer. For example, you may want to display only cities with a population above a certain value. You enter a query expression to define your definition query.
To learn more, see Filter features with definition queries.