Disclaimer - Geoblocking
Blocking credit card payments from certain countries
- Can I prefill the Computop form with card data?
- Generating a HAR file for troubleshooting
- How can I test credit card payments via PayU LatAm WebCheckOut in a sandbox environment?
- How can I use the hosted solution for Google- and/ or Apple Pay in standalone mode?
- PayPal - Language Control - Special Function
- Testing correctly - credit cards (VISA, MasterCard, American Express / AMEX)
- See all 9 articles
PCI Compliance and Security
- AES encryption: What is the sende behind the Initialization Vector if he is openly transmitted?
- Am I in full PCI scope when using the Silent Order interface (PayNow)?
- GDPR - General Information
- How can I delete personal data from a transaction in compliance with DSGVO / GDPR?
- What encryption does Computop use?
- Where can I find the PCI certificate from Computop?
- See all 7 articles
- Paypal Classic: Why do I receive "You don´t have permissions to make this API call"
- What does the error message "No controller provided in the request" mean?
- What is the meaning of the "timeout" transaction status?
- What should I do if a refund/credit is rejected by PayPal?
- Why am I receiving the error message "MAC INVALID"?
- Why can' t my requests be decoded properly by Computop?
- See all 17 articles
- Some transactions are getting declined with code -66 ('Soft Decline'). What can be the reason?
- How can I use Amazon Payments V2 with my own button?
- How do "Smart Data Reports" work?
- How is the Structure of Notify (Webhook) in the REST API?
- How to prevent double payments by customers (e.g. via the back button in the browser)?
- Is it possible to send payment links to our customers?
- See all 7 articles
Pay Methods and Services
3-D Secure 2
- Do we have to make changes regarding 3D-Secure 2?
- We are currently not using 3D-Secure at present. Do we have to amend our acquiring contract?
- How will 3DS 2 affect merchants that only instigate 3D-Secure where the transaction value is above a certain value?
- How high is the effort for the merchant if they use Computop payment forms (minimal requirements)?
- Do I as a merchant have to support both version 1 and 2 in regards to 3D-Secure?
- Which Schemes/Brands are supported by 3D-Secure 2?
- See all 16 articles