Your SAP NFe system is facing communication errors with PI or even SEFAZ, errors like, "unable to create a socket", communication error, ... are shown in the SXI_monitor while attempting to check XML communication messages.
socket unable error communiation 404 500 http firewall NF-e NFe , KBA , SLL-NFE , Nota Fiscal Electronica (NFe) , BC-XI-CON , Connectivity , How To
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