IF NOT EXISTS (SELECT TOP 1 1 FROM ObjectMainMessages WHERE ObjectName = 'PK_ILC_UserRole' AND MessageType = 17)
	BEGIN
		DECLARE @NextMessageNo	int

		SELECT @NextMessageNo	= ISNULL(MAX(messageno),799999) 
		FROM ApplicationMessages 
		WHERE MessageNo BETWEEN 800000 AND 999999

		SET @NextMessageNo = @NextMessageNo + 1

		--add main message 100093 = The &1 entered already exists. 
		EXEC AddObjectMainMessageSp 'PK_ILC_UserRole', 17, 100093, 16, 'ILC_UserRole PK violation', 0 

		--add the substitution text
		EXEC AddApplicationMessageSp @NextMessageNo, 'Role', N'1033'

		--add substitution text to main message
		EXEC AddObjectBuildMessageSp 'PK_ILC_UserRole', 17, 1, @NextMessageNo
END

--composite key example
IF NOT EXISTS (SELECT TOP 1 1 FROM ObjectMainMessages WHERE ObjectName = 'PK_ILC_ItemWhse' AND MessageType = 17)
	BEGIN
		DECLARE @NextMessageNo	int
		DECLARE @NextMessageNoNext	int

		SELECT @NextMessageNo	= ISNULL(MAX(messageno),799999) 
		FROM ApplicationMessages 
		WHERE MessageNo BETWEEN 800000 AND 999999

		SET @NextMessageNo = @NextMessageNo + 1
		SET @NextMessageNoNext = @NextMessageNo + 1

		--Message='The Whse, Pending Item combination entered already exists.'

		--add existing main message for PK_ILC_ItemWhse key 
		--100094 = The &1, &2 combination entered already exists
		EXEC AddObjectMainMessageSp 'PK_ILC_ItemWhse', 17, 100094, 16, 'Pending Item Item Whse PK Violation', 0 

		--add the substitution text
		EXEC AddApplicationMessageSp @NextMessageNo, 'Whse', N'1033'
		EXEC AddApplicationMessageSp @NextMessageNoNext, 'Pending Item', N'1033'

		--add substitution text to main message.
		EXEC AddObjectBuildMessageSp 'PK_ILC_ItemWhse', 17, 1, @NextMessageNo
		EXEC AddObjectBuildMessageSp 'PK_ILC_ItemWhse', 17, 2, @NextMessageNoNext
	END