Load Testing Back to Basics: Missing User Variables Errors
There are a few errors that are frequently reported by customers. One of them being the missing user variables error. A missing user variables error basically means that a variable that was suppose to be extracted on an earlier page was not extracted, and the user is now trying to use that variable. The error can be caused by a number of things, the most common are server connectivity issues and improper configuration of a dynamic value.
If the missing user variable error was caused by server connectivity issues, there tends to be a server error before the missing user variable error, as shown below.
A lack of connection prevents the user from extracting the necessary data that is needed to progress to the next page. Fixing the cause of the server error should fix the missing user variable error.
If the missing user variable error was caused by an improper configuration of a dynamic value, there tends to be an extractor error that appears, as shown below.
The extractor error means that the extractor failed to find what it was looking for in the content returned from the server. The extractor error leads to the missing user variable which means that a transaction was configured to use a dynamic value (which is stored in a user state variable) for a field submitted to the server, but no user state variable with that name exists. Notice that the variable name that failed to be extracted is the same variable name that is listed with the missing user variable error. As with the server error, fixing the cause of the extractor error should fix the missing variable error.
The missing user variable error tends to be a symptom of previous errors. Troubleshooting and fixing the earlier errors will most likely fix the missing user variable errors.
– Margaret