code: def check_stripe_api_key(app_configs=None, **kwargs):
  	
  	from . import settings as djstripe_settings
  
  	messages = []
  
  	if not djstripe_settings.STRIPE_SECRET_KEY:
  		msg = "Could not find a Stripe API key."
  		hint = "Add STRIPE_TEST_SECRET_KEY and STRIPE_LIVE_SECRET_KEY to your settings."
  		messages.append(checks.Critical(msg, hint=hint, id="djstripe.C001"))
  	elif djstripe_settings.STRIPE_LIVE_MODE:
  		if not djstripe_settings.LIVE_API_KEY.startswith(("sk_live_", "rk_live_")):
  			msg = "Bad Stripe live API key."
  			hint = 'STRIPE_LIVE_SECRET_KEY should start with "sk_live_"'
  			messages.append(checks.Critical(msg, hint=hint, id="djstripe.C002"))
  	else:
  		if not djstripe_settings.TEST_API_KEY.startswith(("sk_test_", "rk_test_")):
  			msg = "Bad Stripe test API key."
  			hint = 'STRIPE_TEST_SECRET_KEY should start with "sk_test_"'
  			messages.append(checks.Critical(msg, hint=hint, id="djstripe.C003"))
  
  	return messages
docs: Check the user has configured API live/test keys correctly.