Facing issues in the SC20 Build Process

Dear Friends,

We are using the SC20 Smart Module and we are facing issues in the build during the time of giving the Lunch command

lunch msm8909-userdebug

and i am getting the below mentioned error

build/core/envsetup.mk:226: *** Multiple board config files for TARGET_DEVICE msm8909: device/qcom/msm8909/BoardConfig.mk vendor/device/qcom/msm8909/BoardConfig.mk. Stop.

Could anybody help us to resolve this

Have you tried changing the git branch to your current codes? add me skype account pls: Job.Bao
live:76530067

@great
could you describe your issue more detailed´╝č