OpenTP1 complies with the DTP (Distributed Transaction Processing) model specified by the standard-setting organization X/Open. This means that you can write applications to the software interfaces supported by X/Open, and you can use such applications with any software that supports these open standards.

As an example, if a programmer develops a program using the transaction-processing functions specified by X/Open, the program can execute in an OpenTP1 system or any other system that supports the X/Open standards.