SD0077 Error,Invalid referenced record Pinnacle 21 community verison 2.2.0

Hi,

I am getting an error "Invalid referenced record" for SUPPQS domain. However all SUPPQS observation have valid reference record in QS domain.  The explanation for SD0077 states- 

"Reference record defined by Related Domain Abbreviation (RDOMAIN), Unique Subject Identifier (USUBJID), Identifying Variable (IDVAR) and Identifying Variable Value (IDVARVAL) must exist in the target Domain."

Additional Info: IDVAR is not QSSEQ, but it is "QSGRPID". Does this have any effect for the above issue?.

I rechecked and confirmed that for every subject , that valid a reference record in QS.

Thanks,

Ravish