What is source data verification?
Source data verification (SDV) is when a monitor compares the data reported for a study with the original source records. It's a common part of monitoring, which checks that a trial is following the protocol and that its records are accurate.
How this differs from sponsor monitoring systems
Many CTMS products are built for sponsors and CROs to oversee visits across many sites. PAS OneCore looks at monitoring from the site's side: giving a visiting monitor what they need while the site keeps control of its records.