When ITXA sends correlations for multiple transactions, it is present in ICC in a single field delimited by comma. This is causing issue with SLC correlation in ICC. ICC correlates using Senderid, Receiverid and Payment numnber for both IB 820 and OB 824. If there are multiple Payment numbers (Correlations) sent from ITX-A to ICC, ICC treates all the payment numbers as a blob and try to match them to IB 824.
To avoid this, for multiple transactions, ITXA should send only one Correlation per process.