Error
Error Code:
2844
SAP S/4HANA Error 2844: SQLScript Parameter Mismatch
Description
This error indicates that an SQLScript statement, function, or procedure call has been executed with an incorrect number of input parameters. It typically occurs when the arguments supplied do not match the expected signature of the called object, preventing successful execution of the underlying HANA database operation.
Error Message
ERR_SQLSCRIPT_PARAM_COUNT_MISMATCH
Known Causes
3 known causesIncorrect Argument Count
A function or procedure call within an SQLScript statement provides a different number of input parameters than defined in its signature.
View/Table Function Mismatch
When calling a table function or accessing a parameterized view, the number of parameters supplied does not align with its definition.
Signature Change
The definition of a called SQLScript procedure or function has changed, but the calling statement has not been updated accordingly.
Solutions
4 solutions available1. Verify Stored Procedure/Function Signature and Call easy
Ensure the number and order of parameters in the stored procedure/function definition match the call.
1
Identify the stored procedure or function causing the error. This information is usually present in the application logs or the trace if you've enabled detailed tracing.
2
Access the SAP HANA Studio or SAP Business Application Studio (BAS) to view the definition of the stored procedure or function.
3
Examine the parameter list in the stored procedure/function definition. Note the exact number, data types, and order of the parameters.
4
Locate the code that calls this stored procedure or function. This could be within an ABAP program, another SQLScript, or a calculation view.
5
Compare the number and order of parameters in the calling code with the definition. Correct any discrepancies.
6
Example (SQLScript - Procedure Definition):
CREATE PROCEDURE MY_PROC (IN param1 INT, IN param2 VARCHAR(50)) AS ...7
Example (SQLScript - Incorrect Call):
CALL MY_PROC(123); -- Missing param28
Example (SQLScript - Correct Call):
CALL MY_PROC(123, 'some value');2. Review Calculation View Parameter Mapping medium
Check and correct parameter mappings within calculation views that call SQLScript objects.
1
If the error occurs during the execution of a calculation view, open the calculation view in SAP HANA Studio or SAP BAS.
2
Navigate to the 'Mapping' tab or section where the calculation view's output columns are mapped to the input parameters of a called SQLScript object (stored procedure, function, or another calculation view).
3
Identify the specific SQLScript object being called and its parameters.
4
Verify that each input parameter of the SQLScript object has a corresponding mapping from an output column or a literal value within the calculation view.
5
Ensure the data types of the mapped values are compatible with the parameter types of the SQLScript object.
6
If a parameter is not mapped or is mapped incorrectly, adjust the mapping to provide the required input.
7
Save and activate the calculation view after making corrections.
3. Analyze ABAP Code for Stored Procedure Calls medium
Debug ABAP programs to ensure correct parameter passing to SQLScript objects.
1
Identify the ABAP program that is triggering the error. This can often be found in the application logs (e.g., SM21) or by using the transaction ST05 (Performance Trace) to trace SQL statements.
2
Use the ABAP Debugger (transaction SE80 or SE38, then F5 to start debugging) to step through the ABAP code.
3
Locate the ABAP statement that calls the SQLScript object. This is typically done using the `CALL FUNCTION` or `CALL METHOD` statement, potentially with specific syntax for calling HANA stored procedures/functions.
4
Inspect the variables being passed as parameters to the SQLScript object just before the call is executed. Pay close attention to the number and values of these variables.
5
Compare these variables with the expected parameters of the SQLScript object (as determined in Solution 1).
6
Correct the ABAP code to ensure the correct number of parameters are populated and passed in the correct order. This might involve declaring missing variables or adjusting the data being assigned to existing ones.
7
Example (ABAP - Hypothetical Call):
DATA: lv_param1 TYPE i, lv_param2 TYPE c LENGTH 50.
lv_param1 = 123.
lv_param2 = 'some value'.
CALL 'MY_PROC' WITH PARAMETERS
param1 = lv_param1,
param2 = lv_param2.
" Or using Native SQL for HANA:
EXEC SQL.
CALL "MY_PROC"(:lv_param1, :lv_param2)
ENDEXEC.
4. Update SAP HANA Database Objects advanced
Recreate or update the stored procedure/function in HANA if the definition has been unintentionally altered.
1
If the stored procedure or function definition in the HANA database has been modified (e.g., during a transport or manual change) without updating the calling code, this error can occur.
2
Obtain the correct and latest version of the SQLScript object (stored procedure or function) from the development environment or a reliable source code repository.
3
Connect to the SAP HANA database using SAP HANA Studio or a command-line tool like `hdbsql`.
4
Drop the existing stored procedure/function (if necessary and safe to do so, consider backups or version control).
5
Recreate the stored procedure/function using the correct SQLScript code. Ensure the parameter list is exactly as intended.
6
Example (SQLScript - Recreate):
DROP PROCEDURE MY_PROC;
CREATE PROCEDURE MY_PROC (IN param1 INT, IN param2 VARCHAR(50)) AS
BEGIN
-- Procedure logic here
END;7
After recreating the object, test the application or the calling code to confirm the error is resolved.