POSDM Transactions can only contain data from the same store

Hi,

We got below exception handling in POSDM,

1. We can handle this error by executing the first task and subsequently we will be executing the remaining tasks, which led to resolve the problem. But we got millions of records which required long time and handling the task, is there any way to automate this process?

2.  What is the root cause for this issue?

Thanks and Regards,

Ramesh D