nvarchar(126)

When called in a CATCH block, returns the stored procedure name where the error occurred.

Returns NULL if the error did not occur within a stored procedure or trigger.

Returns NULL if called outside the scope of a CATCH block.

ERROR_PROCEDURE may be called anywhere within the scope of a CATCH block.

ERROR_PROCEDURE returns the name of the stored procedure or trigger where the error occurred, regardless of the number of times it is called or where it is called within the scope of the CATCH block. This contrasts with functions, such as @@ERROR, which return the error number in the statement immediately following the one that caused the error or in the first statement of the CATCH block.

In nested CATCH blocks, ERROR_PROCEDURE returns the name of the stored procedure or trigger specific to the scope of the CATCH block in which it is referenced. For example, the CATCH block of a TRY…CATCH construct could have a nested TRY…CATCH. Within the nested CATCH block, ERROR_PROCEDURE returns the name of the stored procedure or trigger where the error occurred that invoked the nested CATCH block. If ERROR_PROCEDURE is run in the outer CATCH block, it returns the name of the stored procedure or trigger where the error occurred that invoked that CATCH block.

A. Using ERROR_PROCEDURE in a CATCH block

USE AdventureWorks;
GO

-- Verify that the stored procedure does not already exist.
IF OBJECT_ID ( 'usp_ExampleProc', 'P' ) IS NOT NULL 
    DROP PROCEDURE usp_ExampleProc;
GO

-- Create a stored procedure that 
-- generates a divide-by-zero error.
CREATE PROCEDURE usp_ExampleProc
AS
    SELECT 1/0;
GO

BEGIN TRY
    -- Execute the stored procedure inside the TRY block.
    EXECUTE usp_ExampleProc;
END TRY
BEGIN CATCH
    SELECT ERROR_PROCEDURE() AS ErrorProcedure;
END CATCH;
GO

B. Using ERROR_PROCEDURE in a CATCH block with other error-handling tools

USE AdventureWorks;
GO

-- Verify that the stored procedure does not already exist.
IF OBJECT_ID ( 'usp_ExampleProc', 'P' ) IS NOT NULL 
    DROP PROCEDURE usp_ExampleProc;
GO

-- Create a stored procedure that 
-- generates a divide-by-zero error.
CREATE PROCEDURE usp_ExampleProc
AS
    SELECT 1/0;
GO

BEGIN TRY
    -- Execute the stored procedure inside the TRY block.
    EXECUTE usp_ExampleProc;
END TRY
BEGIN CATCH
    SELECT 
        ERROR_NUMBER() AS ErrorNumber,
        ERROR_SEVERITY() AS ErrorSeverity,
        ERROR_STATE() AS ErrorState,
        ERROR_PROCEDURE() AS ErrorProcedure,
        ERROR_MESSAGE() AS ErrorMessage,
        ERROR_LINE() AS ErrorLine;
        END CATCH;
GO

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