Integration in smallinvoice from Lourens Systems

CONFIGURATION

Login to your smallinvoice account via https://app.smallinvoice.com: 

1. Click Home
2. Click Configuration
3. Click Integration
4. Click on the payrexx logo to configure the settings: 

1. Click Edit 
2. Enter your Payrexx Account name such as https://yourname.payrexx.com
3. Insert the API Secret that you copied from the Payrexx backend (see next screenshot) 
4. Click the link and choose the PSP's and payment methods 
5. Enter the ID's of the PSP's and payment methods that you want to appear (you'll find the PSP ID's here: https://developers.payrexx.com/docs/miscellaneous

1. Click Settings
2. Click API 
3. Enter the URL https://app.smallinvoice.com/payrexx.php
4. Choose Normal (PHP-Post) 
5. Click Save and wait
6. Double click on the API Secret in order it gets blue and click the right mouse button
7. Click "Kopieren" respectively "Copy" 

1. Click on PAYMENT 
2. Make sure that PAYREXX is set to "Generate and print" 

Now the payrexx payment link appears on the invoice: