FTSRV is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Fields in the Service area" 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_FTSRV TYPE FTSRV.
The FTSRV table consists of various fields, each holding specific information or linking keys about Fields in the Service area data available in SAP. These include P_ALTER_TXT (Foreign Trade: Service: Additional Description), P_LAENGE (Length of commodity code / code number for foreign trade), C_CASE (Foreign Trade: Service: Upper/Lower Case), C_ZOLLTXT (Foreign Trade: Service: Additinal Customs Description)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .