FRM-41079: Error adding Group column.
Cause: Caused by one of the following:
1. You cannot add columns to a group that already has rows.
2. The width of CHAR_COLUMN-typed columns cannot be less than the width of the corresponding database column.
3. You entered the name of a nonexistent or invalid record group.
4. You entered the name of a nonexistent or invalid column.
5. You entered a column type other than CHAR, NUMBER, or DATE.
Action: You can only add columns to a group after it is created with a call to CREATE_GROUP. If the group already has rows, delete the rows with DELETE_GROUP_ROW, then add the column.
Trigger: ON-ERROR