AS2 Connection - Invalid signature schemes

  • 20 March 2024
  • 2 replies

Userlevel 2

Hi Folks,


When we config the AS2 connection with new partner, 

receiving the “Invalid signature schemes” error , below is the log info , How to resolve this Signature issue. Is it something done at CData end or the Partner end. 


2 replies

Userlevel 1

Hi Pradeep,

Based on the log, it appears that TLS 1.3 has been enabled for this partner. The "invalid signature schemes" error is related to a group that is part of the TLS 1.3 standard.


Since TLS 1.3 is relatively new and not yet widely adopted, it could be causing the issue you're experiencing. To troubleshoot, please try disabling the use of TLS 1.3 from the Advanced tab of the AS2 connector. Instead, only use TLS 1.1 and TLS 1.2. Then, attempt the transmission again to see if it sends successfully.

Userlevel 1

Hi Pradeep,


Please ensure to select the appropriate category (Product) from the dropdown whenever you ask a question. This helps to prevent your question from going unanswered for an extended period.