Hi prasath,
This is your data flow.
DS--> DSO1--> DSO2 and which version of bw your using.
See your data source name is 0TB_DS14 which is coming from ecc.
80TB_DS14 this is data mart data source so there won't be psa here. you generated export data source and connected to further dso thru updat rules(if your 3.x)
Before removing info object have you deleted in dso?
Thanks