Cause it is easier to read if `shouldThisAuthReplyBeSaved` has a single responsibility of checking if AuthReply is valid for saving.

The following steps are mandatory for building the error message. They are important for `buildInvalidAuthReplyErrorMessage` but they are needed by `shouldThisAuthReplyBeSaved`. 
1. Get request id from AuthReply.
2. Get order number from AuthReply.
3. Use StringUtils to trim the value of the request id.
4. Use StringUtils to trim the value of the order number.