Connection Error in Data FLow

Hi

I am facing below error

[Target Table:DELIVERY_FACT(RM_DS.dbo)]

Cannot find the matching name for <source> column <Query>. (BODI-1111063)

[Target Table:DELIVERY_FACT(RM_DS.dbo)]
The flat loader <DELIVERY_FACT(RM_DS.dbo)> cannot be connected to NRDM. (BODI-1111178)

Can any suggest the solution for this

Thanks

NK