Insert record in GTM-list.
If a record is found with selection values, an error is returned.
The letter of the attributes are allowed as field names.
You can also specify the field names without the GTM-table number: SML.C_1, SML.C_2 etc, instead of SML5.C_1, SML5.C_2 for GTM-table SML5.
As the classification code is no longer the unique key, it is necessary to provide the unique key "SML_NUM".