The Stored Procedure, '%1!s!', failed to run because the Integration Services database (SSISDB) is not in single-user mode. ...

The Stored Procedure, '%1!s!', failed to run because the Integration Services database (SSISDB) is not in single-user mode. In SQL Server Management Studio, launch Database Properties dialog box for SSISDB, switch to the Options tab, and set the Restrict Access property to single-user mode (SINGLE_USER). Then, try to run the stored procedure again.