SAP ABAP Data Element TXW_X_CHKS (Flag: Calculate Data Checksums)
Hierarchy
☛ SAP_FIN (Software Component) SAP_FIN
   ⤷ CA-GTF-DRT (Application Component) Data Retention Tool
     ⤷ FTW1 (Package) Data Retention Tool
Basic Data
Data Element TXW_X_CHKS
Short Description Flag: Calculate Data Checksums  
Data Type
Category of Dictionary Type D   Domain
Type of Object Referenced     No Information
Domain / Name of Reference Type XFELD    
Data Type CHAR   Character String 
Length 1    
Decimal Places 0    
Output Length 1    
Value Table      
Further Characteristics
Search Help: Name    
Search Help: Parameters    
Parameter ID   
Default Component name    
Change document    
No Input History    
Basic direction is set to LTR    
No BIDI Filtering    
Field Label
  Length  Field Label  
Short 10 Checksums 
Medium 15 Calc. checksums 
Long 25 Calculate data checksums 
Heading 0   
Documentation

Definition

If this option is selected, a data checksum is calculated for each data segment and stored in the data file. This makes possible the later checking of file integrity and verifcation that no changes to the data have been made.

Checksums can be verified in following ways:

  1. The generic data file query utility allows you to check individual data segments. Please note that large data segments may require a long time to recompute the checksum. As a rule it takes about 1 to 2 minutes to compute a checksum takes for 10 Megabyte of data.
    Menu path: "Information system" - "Data extract browser"
  2. The "verify data checksums" utility verifies all segments in a data file. This utility can also run in background.
    Menu path: "Utilities" - "Verify data checksums"

Data checksums vs. control totals

As well as calculating checksums, the extraction utility also calculates control totals for certain data segments.

  • Data checksums are calculated on the "byte level" of the data file records. They can be used for verifying that a data file has not been altered in any way after it was created.
  • Control totals are specific key figures that are accumulated for all records in a data segment. Control totals can be configured in the data segment configuration. They can be used to verify that all required records have been extracted to a data file. Example: for FI document items, all local currency values are totaled (grouped by the debit/ credit indicator).

History
Last changed by/on SAP  20010830 
SAP Release Created in