Ant Failing : Property was circularly defined.

Getting the below error during ant all/ant clean all

amazonpayapi.serviceEndPoint.gb=${amazonpayapi.serviceEndPoint.gb}

/hybris/bin/platform/build.xml:9: The following error occurred while executing this line:

/hybris/bin/platform/resources/ant/antmacros.xml:32: Property amazonpayapi.serviceEndPoint.gb was circularly defined.