The SAP system has a data dictionary, which effectively holds data on the data in the system (meta data). The data dictionary in SAP is often referred to as transaction
SE11 "Abap dictionary", for good reason: this is a very commonly used transaction that can grant you access to the why and how of data. Would you like to turn data into information ? The Abap dictionary or data dictionary is an excellent starting point.
You have defined a transparent table, created data elements for it some of which have domains with a control table or with domain values. And now you need to do all of this again, including actual table content, for a new system. I've composed a small tool that will help you create a download file with everything you need for the table. And with the same tool, implemented at the receiving end, domains, data elements, the table with it's fields and actual content can be restored (upload).