SAP G_VALUE_CONVERT Function Module for Transfer a Value with Type Conversion
G_VALUE_CONVERT is a standard g value convert SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Transfer a Value with Type Conversion processing and below is the pattern details for this FM, showing its interface including any import and export parameters, exceptions etc. there is also a full "cut and paste" ABAP pattern code example, along with implementation ABAP coding, documentation and contribution comments specific to this or related objects.
See here to view full function module documentation and code listing for g value convert FM, simply by entering the name G_VALUE_CONVERT into the relevant SAP transaction such as SE37 or SE38.
Function Group: GSDD
Program Name: SAPLGSDD
Main Program:
Appliation area: G
Release date: N/A
Mode(Normal, Remote etc): Normal Function Module
Update:

Function G_VALUE_CONVERT pattern details
In-order to call this FM within your sap programs, simply using the below ABAP pattern details to trigger the function call...or see the full ABAP code listing at the end of this article. You can simply cut and paste this code into your ABAP progrom as it is, including variable declarations.CALL FUNCTION 'G_VALUE_CONVERT'"Transfer a Value with Type Conversion.
EXPORTING
FROMVALUE = "Value to be Transferred
* TO_DATATYPE = 'CHAR' "Screen Data Type for Screen Painter
* TO_DECIMALS = 000000 "Number of decimal places
* TO_LENG = 000000 "Length of Target Field (Number of Characters)
* TO_LOWERCASE = ' ' "Flag: Lower Case Letters allowed
* TO_OUTPUTLEN = 000000 "Output Length of Target Field
* TO_SIGN = ' ' "Sign Flag for Numeric Fields (X=set)
* FROM_CONVEXIT = ' ' "Conversion Routine (such as ALPHA)
* FROM_DATATYPE = 'CHAR' "Screen Data Type for Screen Painter
* FROM_DECIMALS = 000000 "Number of Decimal Places
* FROM_LENG = 000000 "Length of Source Field (Number of Characters)
* FROM_LOWERCASE = ' ' "Flag: Lower Case Letters allowed
* FROM_OUTPUTLEN = 000000 "Output Length of Source Field
* FROM_SIGN = ' ' "Sign Flag for Numeric Fields (X=set)
* TO_CONVEXIT = ' ' "Conversion Routine (such as ALPHA)
IMPORTING
TOVALUE = "Value after Type Conversion
EXCEPTIONS
ILLEGAL_LENGTH = 1 TYPE_MISMATCH = 2 VALUE_NOT_CONVERTIBLE = 3 WRONG_FORMAT = 4
IMPORTING Parameters details for G_VALUE_CONVERT
FROMVALUE - Value to be Transferred
Data type: COptional: No
Call by Reference: No ( called with pass by value option)
TO_DATATYPE - Screen Data Type for Screen Painter
Data type: DFIES-DATATYPEDefault: 'CHAR'
Optional: Yes
Call by Reference: No ( called with pass by value option)
TO_DECIMALS - Number of decimal places
Data type: DFIES-DECIMALSDefault: 000000
Optional: Yes
Call by Reference: No ( called with pass by value option)
TO_LENG - Length of Target Field (Number of Characters)
Data type: DFIES-LENGDefault: 000000
Optional: Yes
Call by Reference: No ( called with pass by value option)
TO_LOWERCASE - Flag: Lower Case Letters allowed
Data type: DFIES-LOWERCASEDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
TO_OUTPUTLEN - Output Length of Target Field
Data type: DFIES-OUTPUTLENDefault: 000000
Optional: Yes
Call by Reference: No ( called with pass by value option)
TO_SIGN - Sign Flag for Numeric Fields (X=set)
Data type: DFIES-SIGNDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
FROM_CONVEXIT - Conversion Routine (such as ALPHA)
Data type: DFIES-CONVEXITDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
FROM_DATATYPE - Screen Data Type for Screen Painter
Data type: DFIES-DATATYPEDefault: 'CHAR'
Optional: Yes
Call by Reference: No ( called with pass by value option)
FROM_DECIMALS - Number of Decimal Places
Data type: DFIES-DECIMALSDefault: 000000
Optional: Yes
Call by Reference: No ( called with pass by value option)
FROM_LENG - Length of Source Field (Number of Characters)
Data type: DFIES-LENGDefault: 000000
Optional: Yes
Call by Reference: No ( called with pass by value option)
FROM_LOWERCASE - Flag: Lower Case Letters allowed
Data type: DFIES-LOWERCASEDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
FROM_OUTPUTLEN - Output Length of Source Field
Data type: DFIES-OUTPUTLENDefault: 000000
Optional: Yes
Call by Reference: No ( called with pass by value option)
FROM_SIGN - Sign Flag for Numeric Fields (X=set)
Data type: DFIES-SIGNDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
TO_CONVEXIT - Conversion Routine (such as ALPHA)
Data type: DFIES-CONVEXITDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
EXPORTING Parameters details for G_VALUE_CONVERT
TOVALUE - Value after Type Conversion
Data type: COptional: No
Call by Reference: No ( called with pass by value option)
EXCEPTIONS details
ILLEGAL_LENGTH - Length of a Transferring Field not Correct
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
TYPE_MISMATCH - Source and Target Type do not match
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
VALUE_NOT_CONVERTIBLE - Transferred Value not Convertable
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
WRONG_FORMAT - Transferred Value in Incorrect Format
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
Copy and paste ABAP code example for G_VALUE_CONVERT Function Module
The ABAP code below is a full code listing to execute function module POPUP_TO_CONFIRM including all data declarations. The code uses the original data declarations rather than the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the newer method of declaring data variables on the fly. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8), which i why i have stuck to the origianl for this example.| DATA: | ||||
| lv_tovalue | TYPE C, " | |||
| lv_fromvalue | TYPE C, " | |||
| lv_illegal_length | TYPE C, " | |||
| lv_to_datatype | TYPE DFIES-DATATYPE, " 'CHAR' | |||
| lv_to_decimals | TYPE DFIES-DECIMALS, " 000000 | |||
| lv_to_leng | TYPE DFIES-LENG, " 000000 | |||
| lv_to_lowercase | TYPE DFIES-LOWERCASE, " SPACE | |||
| lv_to_outputlen | TYPE DFIES-OUTPUTLEN, " 000000 | |||
| lv_to_sign | TYPE DFIES-SIGN, " SPACE | |||
| lv_from_convexit | TYPE DFIES-CONVEXIT, " SPACE | |||
| lv_type_mismatch | TYPE DFIES, " | |||
| lv_from_datatype | TYPE DFIES-DATATYPE, " 'CHAR' | |||
| lv_value_not_convertible | TYPE DFIES, " | |||
| lv_wrong_format | TYPE DFIES, " | |||
| lv_from_decimals | TYPE DFIES-DECIMALS, " 000000 | |||
| lv_from_leng | TYPE DFIES-LENG, " 000000 | |||
| lv_from_lowercase | TYPE DFIES-LOWERCASE, " SPACE | |||
| lv_from_outputlen | TYPE DFIES-OUTPUTLEN, " 000000 | |||
| lv_from_sign | TYPE DFIES-SIGN, " SPACE | |||
| lv_to_convexit | TYPE DFIES-CONVEXIT. " SPACE |
|   CALL FUNCTION 'G_VALUE_CONVERT' "Transfer a Value with Type Conversion |
| EXPORTING | ||
| FROMVALUE | = lv_fromvalue | |
| TO_DATATYPE | = lv_to_datatype | |
| TO_DECIMALS | = lv_to_decimals | |
| TO_LENG | = lv_to_leng | |
| TO_LOWERCASE | = lv_to_lowercase | |
| TO_OUTPUTLEN | = lv_to_outputlen | |
| TO_SIGN | = lv_to_sign | |
| FROM_CONVEXIT | = lv_from_convexit | |
| FROM_DATATYPE | = lv_from_datatype | |
| FROM_DECIMALS | = lv_from_decimals | |
| FROM_LENG | = lv_from_leng | |
| FROM_LOWERCASE | = lv_from_lowercase | |
| FROM_OUTPUTLEN | = lv_from_outputlen | |
| FROM_SIGN | = lv_from_sign | |
| TO_CONVEXIT | = lv_to_convexit | |
| IMPORTING | ||
| TOVALUE | = lv_tovalue | |
| EXCEPTIONS | ||
| ILLEGAL_LENGTH = 1 | ||
| TYPE_MISMATCH = 2 | ||
| VALUE_NOT_CONVERTIBLE = 3 | ||
| WRONG_FORMAT = 4 | ||
| . " G_VALUE_CONVERT | ||
ABAP code using 7.40 inline data declarations to call FM G_VALUE_CONVERT
The below ABAP code uses the newer in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. Please note some of the newer syntax below, such as the @DATA is not available until 4.70 EHP 8.| "SELECT single DATATYPE FROM DFIES INTO @DATA(ld_to_datatype). | ||||
| DATA(ld_to_datatype) | = 'CHAR'. | |||
| "SELECT single DECIMALS FROM DFIES INTO @DATA(ld_to_decimals). | ||||
| DATA(ld_to_decimals) | = 000000. | |||
| "SELECT single LENG FROM DFIES INTO @DATA(ld_to_leng). | ||||
| DATA(ld_to_leng) | = 000000. | |||
| "SELECT single LOWERCASE FROM DFIES INTO @DATA(ld_to_lowercase). | ||||
| DATA(ld_to_lowercase) | = ' '. | |||
| "SELECT single OUTPUTLEN FROM DFIES INTO @DATA(ld_to_outputlen). | ||||
| DATA(ld_to_outputlen) | = 000000. | |||
| "SELECT single SIGN FROM DFIES INTO @DATA(ld_to_sign). | ||||
| DATA(ld_to_sign) | = ' '. | |||
| "SELECT single CONVEXIT FROM DFIES INTO @DATA(ld_from_convexit). | ||||
| DATA(ld_from_convexit) | = ' '. | |||
| "SELECT single DATATYPE FROM DFIES INTO @DATA(ld_from_datatype). | ||||
| DATA(ld_from_datatype) | = 'CHAR'. | |||
| "SELECT single DECIMALS FROM DFIES INTO @DATA(ld_from_decimals). | ||||
| DATA(ld_from_decimals) | = 000000. | |||
| "SELECT single LENG FROM DFIES INTO @DATA(ld_from_leng). | ||||
| DATA(ld_from_leng) | = 000000. | |||
| "SELECT single LOWERCASE FROM DFIES INTO @DATA(ld_from_lowercase). | ||||
| DATA(ld_from_lowercase) | = ' '. | |||
| "SELECT single OUTPUTLEN FROM DFIES INTO @DATA(ld_from_outputlen). | ||||
| DATA(ld_from_outputlen) | = 000000. | |||
| "SELECT single SIGN FROM DFIES INTO @DATA(ld_from_sign). | ||||
| DATA(ld_from_sign) | = ' '. | |||
| "SELECT single CONVEXIT FROM DFIES INTO @DATA(ld_to_convexit). | ||||
| DATA(ld_to_convexit) | = ' '. | |||
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