Hi Nagendran
Please check note as below can you confirm
1. If you are on latest patch ?It has this issue reported : 'Cannot transfer prices from catalog' .
2. Also try to restart the VMC and check the mapping related to Price , currency , price_unit and unit
Since its working in quality I would suggest it could be the last option which you should focus on .
Refer note:
1350390 - SRM-MDM Catalog 3.0 SP03 Patch 02 Release Note
Regards
Vinita