Patch Applicator for OTA Difference Messages
Supported OTA versions: OTA 2001A, 2001B, 2001C
This is a service provided to the OTA community allowing for the automatic generation
OTA_UpdateRQ messages. The underlying engine which drives this
service is part of the VM Tools package available via open source from
You may also be interested in our Difference Generator page.
Patch Application via Web-accessible URLs
Use this form to apply differences from source messages accessible via the Web. For your convenience we have some sample OTA messages (taken from the 2001A specification document). If your XML documents are not web-accessible, you can also use our file upload interface.
Use this form if you are behind a firewall or have documents to diff which are not accessible via the Web.
- Opentravel homepage
- VMTools homepage
- JWMA Project
(provides code for parsing form posts which are
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