It's fine to start with 'if', but doing it repeatedly like this can be hard to read. You can always reverse the order to avoid starting the same way:
How about using when instead of if?The request data is loaded to the Bbo table if the Exchanger is used for sending the request to the vendor.
In 3, you have the noun Exchanger twice close together- why not use a pronoun?If the Exchanger is used, it...
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