Registering a SSDT database project as a data tier application fails I am having problems publishing a SSDT database project and registering it as a data tier application. Let me explain.

I have a database (A) which references two other databases (B &amp; C) through linked servers. I have created projects based on B and C and snapshoted the projects to create dacpac's for databases B and C. I have created a database project for database A which has database references to B and C through dacpac's. I have set SQLCMD variables and modified the db project ddl scripts to use the SQLCMD variables in place of the un-resolved linked server names. The project builds!

I am trying to publish the project as a data tier application but keep receiving the following error "Databases registered as a DAC database must be hosted by an instance of SQL 2005 SP4, SQL 2008 SP2, SQL 2008 R2, SQL 2012 or SQL Azure". Incidentally I am running SQL server 2012.

I thought I would test whether I could register as a data tier application through SSMS. Within SSMS the option to "Register as data Tier Application" is grayed out. I therefore tried to "Export Data Tier Application" and received a number of error in reference to the linked server objects.

My question is; is it possible to deploy a SSDT database project and register it as a Data Tier Application where the project is using linked servers, or am I doing something wrong? If it is possible could some one provide some advice.

I have broken Google looking for the answer, so any help would be greatly appreciated. I have previously asked this question on StackOverflow but got no response so I am posting here in a more targeted forum.
I had this error recently so I'll add my solution for anyone else who comes across this,

Turns out in my publish.xml I had RegisterDataTierApplication set to True. The first time I published the database it worked fine, but then I got the same error, as the database was already registered as a Data Tier application.

By setting to false (or unchecking the checkbox in the gui) it works fine.

 &lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"&gt;
  &lt;PropertyGroup&gt;
    &lt;IncludeCompositeObjects&gt;True&lt;/IncludeCompositeObjects&gt;
    &lt;TargetDatabaseName&gt;foo&lt;/TargetDatabaseName&gt;
    &lt;DeployScriptFileName&gt;foo.sql&lt;/DeployScriptFileName&gt;
    &lt;BlockWhenDriftDetected&gt;False&lt;/BlockWhenDriftDetected&gt;
    &lt;RegisterDataTierApplication&gt;False&lt;/RegisterDataTierApplication&gt;
    &lt;ProfileVersionNumber&gt;1&lt;/ProfileVersionNumber&gt;
    &lt;TargetConnectionString&gt;Data Source=foo;Integrated Security=True;Pooling=False&lt;/TargetConnectionString&gt;
  &lt;/PropertyGroup&gt;
&lt;/Project&gt;




As a note about extracting the dacpac - you will always get an error if extracting via ssms,

If you use the SQL Server Object Explorer in VisualStudio, you can set more options, including unchecking the 'Verify Extraction' option, which will then allow you to create the dacpac.