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 +CSQX620E cpf CSQXRCTL System SSL error, function 'gsk_secure_socket_read' RC=456

Jørgen Pedersen's profile image
Jørgen Pedersen posted Mon March 24, 2025 11:04 AM

After installing a new CA TLS certificate (refreshed), I get the following error:
+CSQX620E cpf CSQXRCTL System SSL error, 199
channel Channel-name
connection 1.2.3.4
function 'gsk_secure_socket_read' RC=456

RC=456 means just: 
[GSK_ERR_ICSF_SERVICE_FAILURE]
    ICSF callable service returned an error.

And the certificates are not installed in the ICSF but in RACF as far as I know.

Cipher spec: TLS_AES_128_GCM_SHA256.

(And it worked with the old certificate, so it's related to the new TLS certificate contents).

Any tips is highly appreciated, as I find the error quite misleading.