The regular name that is entered in the heading row can only contain 35 characters. You can enter an additional name for a service, containing 4 x 40 characters.
It is possible to choose whether the service's additional name should be included (as text rows) in order rows. This is determined by the corresponding setting for parts, under Orders / Inquiries under the Purchase tab and under Orders / Quotes under the Sales tab in the Settings procedure.
However, the setting above does not determine whether or not the additional name shall be included in invoicing/payment plans. Then the additional name is included regardless of the setting.