Выражение встречается в следующем контексте:
Xchanging Ins-sure Services (and/or successor organisations) are authorised to sign a contract wording prior to premium payment in accordance with Xchanging Ins-sure Services early documentation scheme.

Заранее спасибо !

http://www.lloyds.com/Lloyds_Market/Market_participants/Committees_and_associations/XISXCS.htm