# Maintain Item Groups

> [HTML Version](appli-maintain-item-groups.htm)





\- As essential master data in item management, item groups should never be changed if they have been used for items.



\- If a subsequent change in the item groups is absolutely necessary, this change represents a serious intervention in the entire item management.

  Therefore such a change can only be made via a special module in the eXtra4<winIII>DatabaseTools