If that is specific to a single record open that record and edit the field and make that value to null.
If that is for multiple records export the data for that object (id and particualr field) using data loader and change the values of the particular field to blank and perform update operation.
If this solution helps, Please mark it as best answer.
If that is specific to a single record open that record and edit the field and make that value to null.
If that is for multiple records export the data for that object (id and particualr field) using data loader and change the values of the particular field to blank and perform update operation.
If this solution helps, Please mark it as best answer.
Thanks,