Error
Error Code:
2848
SAP S/4HANA Error 2848: SQLScript Parameter Mode Mismatch
Description
This error, ERR_SQLSCRIPT_PARAM_MODE_MISMATCH, indicates a discrepancy in how parameters are defined or used within SAP HANA SQLScript code, such as stored procedures, functions, or views. It typically occurs when the mode (IN, OUT, INOUT) of a parameter in a calling statement or an internal declaration does not match its formal definition, preventing successful compilation or execution of database objects.
Error Message
ERR_SQLSCRIPT_PARAM_MODE_MISMATCH
Known Causes
3 known causesIncorrect Parameter Mode Definition
A parameter in an SQLScript procedure, function, or view is formally declared with an IN, OUT, or INOUT mode that does not align with its intended usage or the logic within the script.
Mismatched Parameter Modes in Call
The calling statement or application attempts to pass parameters to an SQLScript object (e.g., a procedure) with modes that do not correspond to the object's formal parameter definitions.
Redeclaration or Dependency Conflicts
Conflicts arise when an SQLScript object is redefined, or dependent objects are not properly updated, leading to a mismatch between the expected and actual parameter modes.
Solutions
4 solutions available1. Verify SQLScript Function/Procedure Signature easy
Ensures the calling program's parameter types and modes match the SQLScript definition.
1
Identify the specific SQLScript function or procedure that is causing the error. This is usually indicated in the surrounding error messages or logs.
2
Access the definition of the SQLScript object using SAP HANA Studio or SAP Business Application Studio. Navigate to the relevant package and find the function or procedure.
3
Carefully examine the parameter list of the SQLScript object. Note the data type and the parameter mode (IN, OUT, INOUT) for each parameter.
Example SQLScript function signature:
CREATE FUNCTION my_function (IN param1 NVARCHAR(50), OUT param2 INTEGER) RETURNS INTEGER ...4
Locate the code that is calling this SQLScript object. This could be within an ABAP program, another SQLScript object, or a client application.
5
Compare the parameter types and modes used in the calling code with the SQLScript definition. Ensure they are an exact match. For example, if the SQLScript expects an 'IN' parameter of type INTEGER, the calling code must provide an integer value as an input parameter. If it expects an 'OUT' parameter, the calling code should be prepared to receive an output value.
Example ABAP code calling a function:
CALL 'my_function' ( param1 = lv_input_string, param2 = lv_output_integer )6
Correct any discrepancies in parameter types or modes in the calling code or, if necessary, in the SQLScript definition itself (with appropriate testing and impact analysis).
2. Review Data Type Compatibility medium
Addresses mismatches between ABAP data types and SQLScript data types.
1
Identify the specific parameters causing the 'PARAM_MODE_MISMATCH' error. This often occurs when passing data between ABAP and SQLScript.
2
Consult the SAP S/4HANA documentation or SAP HANA SQLScript reference for the expected data types of the SQLScript function/procedure parameters.
3
Examine the data types of the variables being used in the ABAP code to pass values to the SQLScript. Pay close attention to fundamental types like characters, numbers, dates, and timestamps.
Example ABAP data declaration:
DATA: lv_order_id TYPE i, " Integer
lv_created_on TYPE d. " Date4
Map the ABAP data types to their corresponding SAP HANA SQLScript data types. For instance, ABAP 'i' (integer) typically maps to HANA 'INTEGER' or 'BIGINT', and ABAP 'd' (date) maps to HANA 'DATE'. Be mindful of precision and length for character and numeric types.
Common Mappings:
ABAP 'c' (char) -> HANA 'VARCHAR' or 'NVARCHAR'
ABAP 'i' (int) -> HANA 'INTEGER'
ABAP 'p' (packed num) -> HANA 'DECIMAL'
ABAP 'd' (date) -> HANA 'DATE'
ABAP 't' (time) -> HANA 'TIME'
ABAP 'timestamp' -> HANA 'TIMESTAMP'5
If there's a mismatch, implement explicit type conversions in the ABAP code before calling the SQLScript. Use ABAP's built-in conversion routines or casting.
Example ABAP conversion:
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT' EXPORTING input = lv_numeric_string IMPORTING output = lv_numeric_converted.
* Or if passing a packed number to a decimal:
CALL 'my_sql_procedure' ( param_decimal = lv_packed_number )6
Alternatively, if the SQLScript definition is flexible and not part of a standard SAP component that cannot be modified, consider adjusting the SQLScript parameter data types to better align with common ABAP types, after thorough impact analysis.
3. Handle NULL Values Correctly medium
Ensures that NULL values are passed and handled appropriately between ABAP and SQLScript.
1
Determine if the SQLScript function or procedure is designed to accept NULL values for the parameters in question. Check the SQLScript definition and any associated documentation.
2
In ABAP, check if the variables being passed to the SQLScript are potentially NULL. ABAP's equivalent of NULL is often represented by initial values or specific system flags.
Example ABAP check for initial value:
IF lv_optional_parameter IS INITIAL.
" Handle the case where the parameter is not set
ENDIF.3
If the SQLScript parameter is defined as NOT NULL and you are attempting to pass a NULL value from ABAP, this will cause the error. Modify the ABAP code to provide a default or valid value instead of NULL.
4
If the SQLScript parameter *can* accept NULL, ensure that the ABAP code is correctly representing and passing the NULL value. For some data types, this might involve specific handling or using special ABAP structures.
5
Within the SQLScript itself, ensure that the logic correctly handles potential NULL inputs. Use `IFNULL`, `COALESCE`, or `CASE` statements to provide default values or handle NULLs gracefully.
Example SQLScript handling of NULL:
SELECT COALESCE(input_param, 'default_value') FROM my_table;4. Investigate System and Application Updates advanced
Checks for SAP Notes or patches that resolve known issues with SQLScript parameter handling.
1
Check the SAP Support Portal (launchpad.support.sap.com) for any recently released SAP Notes or Support Packages related to SAP S/4HANA, SAP HANA database, or the specific application component involved in the error.
2
Search for keywords like 'SQLScript', 'parameter mismatch', 'ERR_SQLSCRIPT_PARAM_MODE_MISMATCH', and the specific error code '2848'.
3
Review the identified SAP Notes for their applicability to your system version and the specific scenario triggering the error. Pay attention to prerequisites and affected components.
4
If a relevant SAP Note is found, follow the instructions to implement the necessary corrections. This might involve applying a Support Package, a manual correction note, or a specific transaction.
5
After applying any updates, perform thorough testing of the functionality that was previously encountering the error to confirm the resolution.