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How to re-sign an invoice PDF with a Digital Signature Certificate(DSC)?

Before you begin, review how to enable and digitally sign your invoice PDF using a DSC: How to sign invoice PDF with Digital Signature Certificate?

 
To re-sign an invoice PDF with a Digital Signature Certificate(DSC), follow the steps below:
 

Stage 1: Delete the existing invoice PDF with a DSC

 
1. Go to the Invoices section and open the invoice for which you want to retry DSC.
 
2. Next, go to Attachments to view if the previously generated DSC exists. If yes, then you can click on the "Download icon" to take a backup.
 
3. To remove the existing invoice PDF with DSC, click on the "Delete icon."
 
4. Copy the invoice number (it will be useful for the upcoming steps).
 

Stage 2: Regenerate the invoice PDF with a DSC

 1. To regenerate the invoice PDF with DSC, open the DSC Re-sign link provided by the Peakflo team. 
 

This re-sign link is unique to each tenant and is intended for internal use only. To ensure security and proper configuration, the Peakflo support team will enable this feature and share the link with you. If you require access to this capability or can no longer locate your link, please get in touch with the Peakflo support team for assistance at support@peakflo.co.

2. After opening the link, locate the "Invoice Number" field. Paste the invoice number that you copied in Stage 1, Step 4, into this field. Once the invoice number is entered, click "Submit" to proceed.

3. The system will now begin generating the updated invoice PDF with the applied DSC. This background process typically takes about 2–5 minutes to complete.

4. After this time, return to the "Attachments" section of the invoice to verify that the newly signed PDF has been created and is available for download.

 

You will see that the re-signed invoice PDF with the DSC displays updated timestamps. These timestamps indicate when the digital signature was re-applied. The Invoice Timeline also records this activity, providing a consistent audit trail that supports internal controls, compliance checks, and future verification.