Smallinvoice
Links
Smallinvoice website
Smallinvoice installation manual
Integration
Configuration - Smallinvoice
Log in to your Smallinvoice account.
Click on "Home"
Click on "Configuration"
Click on "Integration"
Click on the Payrexx logo to configure the settings:
Click "Edit"
Enter your Payrexx account name, such as https://yourname.payrexx.com
Insert the "API Secret" that you copied from the Payrexx backend (see next screenshot)
Click the link and choose the PSP's and payment methods
Enter the IDs of the PSPs and payment methods that you want to appear (you will find the PSP IDs here: https://developers.payrexx.com/docs/miscellaneous
Configuration - Payrexx
Click "Settings"
Click "API"
Enter the URL https://app.smallinvoice.com/payrexx.php
Choose "Normal (PHP-Post)"
Click "Save" and wait
Double-click on "API Secret" so it gets blue
Copy the text by clicking the right mouse button and then clicking on "Copy" or by using CTRL+C
Usage
Click on "PAYMENT"
Make sure that PAYREXX is set to "Generate and print"
Now, the Payrexx payment link appears on the invoice:
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