SSDT: unresolved reference to object [dbo].[sp_executesql].

Procedure: Some_Procedure has an unresolved reference to object [dbo].[sp_executesql].

Look familiar? There's a simple solution. We just need to add a reference to the master database.

1) Right-click the References folder in Solution Explorer.

2) Select the "master" System database.

3) Voila. The reference appears under the folder and the warning goes away.