visual studio WPT scripts

We get too many concurrency check issues in our visual studio WPT scripts.

What we have done :

1.Recorded the journey via fiddler due to webtest recorder not recording all the traffic. 2.exported the test .webtest file to visual studio and applied all standard extraction rules

Issue : Script works fine until certain transaction and fail after that due to concurrency check.there are too many concurrency check values and this is taking lot of time to fix this.did someone came across similar issue..??

Error in script :

“Store update, insert, or delete statement affected an unexpected number of rows (0).”