Accomodate tax package codes in Asset master record

Hello Gurus,

We are in process of doing conversion from legacy to SAP for one of the division.

This division are maintaining tax package codes in legacy information and want

to maintain in SAP system for reporting purpose.All of Evaluation groups are

being used for other purpose and there are no more for storing this information.

Please suggest me the best solution as what to advise the users and how to store

this information.

Thanks in advance.

Geeta.