Question

Error processing purchase ([DF-BPA-13]) on Play store

Answer 1

the solution is: (which served to me)

Settings -> Applications -> Memory Usage

Memory Use you point the option ALL
Looking "Google Play Store", you press enter and delete data the solution is: (which served to me)

Settings -> Applications -> Memory Usage

Memory Use you point the option ALL
Looking "Google Play Store", you press enter and delete data

Answer 2

1) You have a Google account (Gmail =) valid and any problems to login?
2) Can be a single point of failure that is not present after a while?
3) Have you tried from another access to different Internet?
4) If you go to Settings - Applications - All and look for the Google Play Store app, try to delete the data in the same, or even upgrade to the latest version available through an installer in APK format
5) The last option is to reset factory data from Settings - Backup.