COMT_PR_UNIT_DATA 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 "Units of Measure for Product: Data Fields" 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_COMT_PR_UNIT_DATA TYPE COMT_PR_UNIT_DATA.
The COMT_PR_UNIT_DATA table consists of various fields, each holding specific information or linking keys about Units of Measure for Product: Data Fields data available in SAP. These include DENOMINATOR (Denominator for Conversion to the Base Unit of Measure), EXPONENT10 (Base 10 Exponent for Conversion to the Base Unit of Measure), GROSS_WEIGHT (Gross Weight), NET_WEIGHT (Net Weight)... 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. .