CCGLS_EXTNUMBER is an SAP Structure so does not store data like a database table does but can be used to process "EHS: External Identification" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately.
i.e. DATA: wa_CCGLS_EXTNUMBER TYPE CCGLS_EXTNUMBER .
Below is the documentation avaialable and full details of the fields which make up this Structure.
|Data Type||length (Decimals)||Check table||Description||Conversion Routine|
|EXTNUMBER||BALNREXT||CHAR||100||Application Log: External ID|
|Application Log: Context: DDIC structure name|
CCGLS_EXTNUMBER - EHS: External Identification CCGLS_ERRORFILE_RWWIC - EHS: Log File (WWI) CCGLS_DMSKEYS_RWWIC - EHS: Print Request - Files for Generation (WWI) CCGLS_DGPHRREL - EHS: Phrase Assignment for Danger Label CCGLS_COUNTRY_TAB - EHS: Structure for Countries CCGLS_COUNTRYIOT - EHS: IOTAB Structure for F4 Help Countries