Unknown SCSI exchange can not decode SCSI data

I'm having iSCSI performance problems.

Packet capture :
https://www.cloudshark.org/captures/0a58c3b43da8

I see a number of packets with expert info Warning Unknown SCSI exchange, can not decode SCSI data.

See packet 104.

The only thing I can find on this is in the wireshark code

we have no record of this exchange and so we can't dissect the * payload

I also noticed in the TCP section that this is 46 reassembled TCP segments.

What does this all mean with the payload in multiple frames?