Hy together

We haveactually a Problem in our Companys with our Blackberry Q10s. Since the Updatefrom 10.2.1. To 10.3.1, a few of them comes with the error message “The User is configured to allow only somedevices to sync and this device is not allowed device”. When you delete theWorkspace and add it again, then it works for 1 – 3 Days. Our Server Version is10.1.2.6, if that helps. Does anyone knows a solution or have the same Prolem?