I'm encountering an authentication failure issue while using the PayPal API to create billing plans and handle subscriptions. Here's the error message I'm receiving: {"name":"AUTHENTICATION_FAILURE","message":"Authentication failed due to invalid authentication credentials or a missing Authorization header.","links":[{"href":"https://developer.paypal.com/docs/api/overview/#error","rel":"information_link"}]} This error occurs when attempting to access the URL https://api.sandbox.paypal.com/v1/billing/plans/P-054793526X109145CMXEAUWQ Below is the my code: @app.route('/purchase', methods=['POST'])
@login_required
def purchase_subscription():
plan = request.form.get('plan')
selected_gateway = request.form.get('payment_gateway')
plan_settings = get_plan_settings()
if not plan_settings:
flash('Failed to fetch plan settings from the database.', 'danger')
return redirect(url_for('subscription'))
credits_to_add = 0
credits_price = 0
subscription_type = None
subscription_start_date = None
subscription_end_date = None
subscription_type_mapping = {
'plan1': 'monthly',
'plan2': 'monthly',
'plan3': 'monthly',
'plan4': 'yearly',
'plan5': 'yearly',
'plan6': 'yearly'
}
if plan in subscription_type_mapping:
subscription_type = subscription_type_mapping[plan]
if subscription_type == 'monthly':
frequency = "MONTH"
elif subscription_type == 'yearly':
frequency = "YEAR"
credits_to_add = plan_settings[plan + "_credits"]
credits_price = plan_settings[plan + "_price"]
else:
flash('Invalid plan selected.', 'danger')
return redirect(url_for('subscription'))
ACCESS_TOKEN = get_access_token(PAYPAL_CLIENT_ID, PAYPAL_CLIENT_SECRET)
if ACCESS_TOKEN:
print("Access token obtained successfully:", ACCESS_TOKEN)
product_id = create_product(plan, credits_price, ACCESS_TOKEN)
if product_id:
billing_plan = create_billing_plan(plan, frequency, credits_price, product_id, ACCESS_TOKEN)
print(billing_plan)
return billing_plan # Return the result of create_billing_plan
else:
flash('Failed to create product.', 'danger')
else:
print("Failed to obtain access token.")
flash('Failed to obtain access token.', 'danger')
return redirect(url_for('subscription'))
def create_product(plan, amount, access_token):
auth_url = 'https://api.sandbox.paypal.com/v1/oauth2/token'
product_url = 'https://api.sandbox.paypal.com/v1/catalogs/products'
print(f"Access token in app.py {access_token}")
headers = {
'Content-Type': 'application/json',
'Accept-Language': 'en_US',
'Authorization': f'Bearer {access_token}'
}
# Create product
product_data = {
"name": f"{plan.capitalize()} Subscription",
"description": f"{plan.capitalize()} Subscription",
"type": "SERVICE",
"category": "SOFTWARE"
}
response = requests.post(product_url, headers=headers, json=product_data)
if response.status_code == 201:
return response.json().get('id')
else:
print(f"Failed to create product: {response.text}")
return None
def create_billing_plan(plan, frequency, amount, product_id, access_token):
auth_url = 'https://api.sandbox.paypal.com/v1/oauth2/token'
plan_url = 'https://api.sandbox.paypal.com/v1/billing/plans'
headers = {
'Accept': 'application/json',
'Accept-Language': 'en_US',
'Authorization': f'Bearer {access_token}'
}
# Create billing plan
plan_data = {
"product_id": product_id,
"name": f"{plan.capitalize()} Subscription",
"description": f"{plan.capitalize()} Subscription",
"billing_cycles": [{
"frequency": {
"interval_unit": frequency,
"interval_count": 1
},
"tenure_type": "REGULAR",
"sequence": 1,
"total_cycles": 0,
"pricing_scheme": {
"fixed_price": {
"value": str(amount),
"currency_code": "USD"
}
}
}],
"payment_preferences": {
"auto_bill_outstanding": True,
"setup_fee": {
"value": "0",
"currency_code": "USD"
},
"setup_fee_failure_action": "CONTINUE",
"payment_failure_threshold": 3
},
"quantity_supported": False,
"taxes": {
"percentage": "0",
"inclusive": False
}
}
response = requests.post(plan_url, headers=headers, json=plan_data)
if response.status_code == 201:
plan_response = response.json()
plan_id = plan_response.get('id')
redirect_url = f'{plan_url}/{plan_id}'
return redirect(redirect_url)
else:
print(f"Failed to create billing plan: {response.text}")
return None Im' 100% sure the access token & client id and secret are correct and i have "Subscription" permission checked Any insights or suggestions on how to troubleshoot and resolve this issue would be greatly appreciated. Thank you!
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