A little bit of formatting + fix 😉

You don't need to include the schema name when you call the OBJECT_ID function:

OBJECT_ID(N'dbo.mtzcus_2014_CoreMenuAuditDetails', N'U')

should be just

OBJECT_ID(N'mtzcus_2014_CoreMenuAuditDetails', N'U')

IF OBJECT_ID(N'mtzcus_2014_CoreMenuAuditDetails', N'U') IS NOT NULL

AND EXISTS ( SELECT TOP 1 FROM sys.columns

WHERE name = N'Threshold2011Or2013Stage1'

AND [object_id] = OBJECT_ID(N'mtzcus_2014_CoreMenuAuditDetails') )

BEGIN;

/* Rename two columns */

EXECUTE sys.sp_rename

'dbo.mtzcus_2014_CoreMenuAuditDetails.Threshold2011Or2013Stage1'

,'dbo.mtzcus_2014_CoreMenuAuditDetails.Threshold2014Stage1';

EXECUTE sys.sp_rename

'dbo.mtzcus_2014_CoreMenuAuditDetails.MetThreshold2011Or2013Stage1'

,'dbo.mtzcus_2014_CoreMenuAuditDetails.MetThreshold2014Stage1';

END;

ELSE IF OBJECT_ID(N'mtzcus_2014_CoreMenuAuditDetails', N'U') IS NULL

BEGIN;

EXECUTE(N'

CREATE TABLE dbo.mtzcus_2014_CoreMenuAuditDetails

(

AuditID UNIQUEIDENTIFIER NOT NULL

,MeasureName VARCHAR(100)

,CriteriaCertificationNumber VARCHAR(50)

,ObjectiveNumber VARCHAR(3)

,ObjectiveName VARCHAR(100)

,Denominator DECIMAL

,Numerator DECIMAL

,Percentage DECIMAL(5, 2)

,Threshold2014Stage2 DECIMAL(3, 0)

,MetThreshold2014Stage2 CHAR(1)

,Threshold2014Stage1 DECIMAL(3, 0)

,MetThreshold2014Stage1 CHAR(1)

,ExclusionDescription VARCHAR(100)

,MetExclusion CHAR(1)

,SelfAttestation CHAR(1)

,CONSTRAINT mtzcus_2014_CoreMenuAuditDetailsFK FOREIGN KEY ( AuditID ) REFERENCES dbo.mtzcus_2014_CoreMenuAuditRun ( AuditID )

);');

END