Skip to main content
Pennylane is a French financial and accounting management solution, available as SaaS.

​
Prerequisites

You need to have a valid Pennylane account and admin rights on Hyperline.

​
Setup

1

In Hyperline, navigate to the Settings > Integrations page

2

Click Connect on the Pennylane card

3

Authenticate on Pennylane

If you are not already logged into Pennylane, enter your Pennylane credentials to proceed.
4

Select the company you wish to connect

Select and authorize the company you want to use.
5

That's it!

Your Hyperline account is ready to send invoices and credit notes.

​
Reconcile Hyperline and Pennylane customers

If you already have existing customers in Pennylane, we’ll need to link them with the corresponding customers in Hyperline. Our support team is available to assist you with this process during onboarding.

​
Synchronization

When you connect your Pennylane account, Hyperline automatically sends invoices with their complete details (including line items and PDF file).
Hyperline only exports invoices created in Hyperline to Pennylane. Invoices imported from Pennylane into Hyperline (or linked to Hyperline-managed subscriptions) are not re-exported to avoid duplication and data conflicts.
If you use Stripe Payments or GoCardless with Hyperline, you also must connect them directly to your Pennylane account to ensure proper enrichment and reconciliation flow in Pennylane.
By default, only invoices and customers created after the connection date will sync. If you need to push older data to Pennylane, please contact our support team.

​
Customer synchronization

Hyperline supports 2 modes of synchronization for customers:
  • no synchronization: customers are not synchronized with Pennylane.
  • from Hyperline to Pennylane: customers created in Hyperline are automatically created in Pennylane with their details.
Alternatively, you can manually link a Pennylane customer to a Hyperline customer. On the Hyperline customer page, click the Edit button in the Integrations section, then paste either the Pennylane customer ID or the URL to the Pennylane customer page.

​
Payment synchronization

Hyperline supports 3 modes of synchronization for payments:
  • no synchronization: payments are not synchronized with Pennylane.
  • from Hyperline to Pennylane: payments created in Hyperline are automatically created in Pennylane and associated to the corresponding invoice. Due to a Pennylane API limitation, only payments done using Stripe or GoCardless can be synced.
  • from Pennylane to Hyperline: payments created in Pennylane are automatically created in Hyperline, and the status of the invoice is updated accordingly.
The synchronization delay is 5 minutes maximum.

​
Synchronization rules

Synchronization rules select the Pennylane revenue account for each invoice or credit note line. Use them when different products or tax treatments need different accounts.
  1. Open Settings > Integrations > Pennylane. In Synchronisation rules, open the rule count card or No rules configured, then click Add rule.
  2. Select the Invoicing entity if prompted and enter a descriptive Name.
  3. Under Applied on, add filters for the lines the rule should cover. You can filter by products, product type, coupons, currency, country, tax scheme, tax territory, tax rate class, billing interval, invoice types, or custom properties.
  4. Under Account configuration, select a Revenue account. Use Sync accounts from Pennylane to refresh the available accounts.
  5. Click Save changes.
A matching rule’s account takes precedence over the product account code. The selected account must exist in Pennylane’s chart of accounts; otherwise, synchronization fails with a missing-account error. See Product and account codes for Pennylane’s account-code format. Leave filters empty to create a default rule. At the same priority, a rule scoped to a matching product takes precedence over the default. Avoid overlapping rules with conflicting accounts.

Example 💡

Select your software subscription revenue account in a default rule, then add a rule filtered to your onboarding product with a separate services revenue account. Pennylane receives each line with the corresponding account.
Pennylane synchronization rules apply to invoice and credit note accounts. They do not select payment accounts or journals, or change your customer and payment synchronization modes.

​
Manage the integration

To reauthorize, reconfigure, resync, or disconnect this integration, see Manage connected integrations.

​
Product and account codes

Configure account codes on products in Hyperline without trailing zeros. For example, if your Pennylane account code is 7010301000, you should enter 7010301 in Hyperline.
Pennylane may display account codes with trailing zeros, but you should remove them when configuring the codes in Hyperline to ensure proper synchronization.

​
Troubleshooting sync errors

If a Pennylane sync fails, open the Pennylane integration issues page in Hyperline to review the latest error and retry once the data has been corrected. Common causes include:
By default, only invoices, customers, and payments created after the Pennylane connection date are synchronized. If you need to push older data, contact support to request a backfill.
During some migrations, Pennylane can display an imported invoice as partially paid even when the invoice total is fully covered by payments. This usually comes from a header-total or reconciliation mismatch. Contact support with the invoice ID so the team can review the Pennylane response.