Encountering an issue where the length of the tracking field value is too long… I cannot find any documentation on how long is too long. It would help to answer here, but also include in official documentation what the restrictions are.
I know this because sending shorter values works but stops at some longer value. If I find out what value it is I will check back in.
Thanks for the feedback. We are constantly working on improving our docs. I will be sure to pass this on to our documentation team, and make sure that the changes are added soon.