To reset/abandon a "Ready For Check in PLM" command, you need to:

Access the object in your CS Dashboard  select More  Life Cycle  "Reset (abandon) Ready For Check in PLM".

As a consequence:

- the selected CAD Document will be reset to the "Preliminary" state in SmarTeam, and can be edited again.

- The corresponding CAD Document in the PLM will transition to "In Preparation" and baselined (frozen).