On the DCI Controller joblog there are several messages like the following one:
DCI0999E: ERROR READ : (00000036/FFFFFFFF)
Is this a problem?
This is not an error on DCI side, it's a problem on TCPIP side.
The x'00000036' (decimal 54) in the DCI0999E message is a TCPIP ERRNO. From IBM Sockets return codes (ERRNOs):
Error number Message name Error description
54 ECONNRESET The connection to the destination host is not available.
Check on TCPIP side if there is any problem.