Why Does My Stored Procedure Get a 'Procedure or function has too many arguments' Error?

Procedure or Function has Too Many Arguments: Identifying and Resolving the Issue

When executing a stored procedure that calls another stored procedure, you may encounter the error "Procedure or function [name] has too many arguments specified." This error indicates that the calling procedure is attempting to pass too many arguments to the called procedure.

Understanding the Error Message

The error message specifies that a particular stored procedure or function, in this case, "etl_M_Update_Promo," has been provided with more arguments than it can handle. This means that the code invoking the procedure is attempting to send more parameters to it than the procedure is designed to receive.

Identifying the Excessive Arguments

To determine the excessive arguments, compare the number of parameters being passed to the procedure in the calling code with the number declared in the definition of the called procedure. In this case, you are invoking "etl_M_Update_Promo" with two parameters ("@GenID" and "@Description"), while the procedure has only one declared parameter ("@GenId").

Resolving the Issue

The solution is to modify the calling code to align with the procedure's parameter list. The procedure definition can also be modified if necessary. Here's how to resolve the issue in this specific case:

1. Modify the Calling Code: Adjust the code that calls "etl_M_Update_Promo" to only provide the required parameter: "@GenID."

   EXEC etl.etl_M_Update_Promo @GenID

2. Modify the Procedure Definition: Alternatively, you can modify the definition of "etl_M_Update_Promo" to accept two parameters, adding the following line:

   @Description NVARCHAR(50)

   Revised Procedure Definition:

   ALTER PROCEDURE [etl].[etl_M_Update_Promo]
   @GenId bigint = 0,
   @Description NVARCHAR(50)
   AS 
   
   .... Rest of your code.

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