| Description | 
| Allows extensions to be added to the OpenTravel specification per trading partner agreement. | 
| Type : TPA_ExtensionsType | 
| Definition | 
| A placeholder in the schema to allow for additional elements and attributes to be included per Trading Partner Agreement (TPA). (Defined in file OTA_CommonTypes.xsd , or a file it imports) | 
| Elements | |||
|  any | |||