Problem in site to site VPN between pfSense( version 2.1) and SonicWall Pro 2040

  • The problem i am facing is establishment of a site to site VPN in between pfSense( version 2.1 Release ) and SonicWall Pro2040 Enhanced ( Firmware Version: SonicOS Enhanced . All of the configuration is done properly , the tunnel shows UP in SonicWall , No error in SonicWall , sonicwall can send packets but can not receive as pfsense could not send any packets or receiving any packets.
    Phase 1 and 2 passes properly and established successfully.

    The tunnel is not showing UP in PfSense , the error from PfSense is below -

    racoon : ERROR : no configuration found for peer  IP
    raccon : ERROR: failed to begin ipsec sa negotiation

    I am not too expert in firewall, so I will be grateful if will receive a proper guideline/solution in this regard.

    Kind Regard

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