I am getting GUID Key columns truncated while using proxy ERP tables to query SAP tables

When working with proxy ERP tables to query SAP tables, you may encounter an issue where GUID key columns get truncated. This is a common limitation that occurs due to SAP's default restrictions.

The Problem

There is a restriction in SAP where the default functional module only displays 16 characters for GUID key columns. This truncation can cause data integrity issues and prevent proper record identification when querying through proxy tables.

Solution

To overcome this limitation, you need to install a Z module (custom function module) in your SAP system. This custom module bypasses the default character restriction and allows full GUID display.

Implementation Steps

Follow these steps to resolve the GUID truncation issue ?

1. Install the custom function module Z_XTRACT_IS_TABLE in your SAP system
2. Activate the module by entering the name of your LINQ table
3. Configure your proxy ERP connection to use this custom function instead of the default module

Custom Function Module

The recommended custom function is Z_XTRACT_IS_TABLE, which provides enhanced table extraction capabilities without the 16-character limitation ?

FUNCTION Z_XTRACT_IS_TABLE
  IMPORTING
    VALUE(QUERY_TABLE) LIKE DD02L-TABNAME
    VALUE(DELIMITER) TYPE C DEFAULT '|'
    VALUE(NO_DATA) TYPE C DEFAULT SPACE
    VALUE(ROWSKIPS) TYPE I DEFAULT 0
    VALUE(ROWCOUNT) TYPE I DEFAULT 0
  TABLES
    OPTIONS STRUCTURE RFC_DB_OPT
    FIELDS STRUCTURE RFC_DB_FLD
    DATA STRUCTURE TAB512
  EXCEPTIONS
    TABLE_NOT_AVAILABLE = 1
    TABLE_WITHOUT_DATA = 2
    OPTION_NOT_VALID = 3
    FIELD_NOT_VALID = 4
    NOT_AUTHORIZED = 5
    DATA_BUFFER_EXCEEDED = 6
    OTHERS = 7.

Benefits

Using the custom Z module provides several advantages ?

• Complete GUID values without truncation
• Better data integrity in proxy table queries
• Enhanced compatibility with external systems
• Improved performance for large data extractions

Conclusion

The GUID truncation issue in SAP proxy tables can be effectively resolved by implementing the Z_XTRACT_IS_TABLE custom function module, which bypasses the default 16-character limitation and ensures complete data extraction.