A summary of all variables and observational units that vary in number or name from the expected. Duplicates are also reported. The higher the number or percentage of mismatch or duplicates, the lower the data quality.
Note: elements represent study variables; records are observational units; counts refer to the total number, whereas sets check the actual names of the elements or records.

• Unexpected data element count
• Unexpected data element set
• Unexpected data record count
• Unexpected data record set
• Duplicates

A summary of all variables and observational units that vary in number or name from the expected divided by segments. Duplicates are also reported. The higher the number or percentage of mismatch or duplicates, the lower the data quality.
Note: elements represent study variables; records are observational units; counts refer to the total number, whereas sets check the actual names of the elements or records.

• Unexpected data element set
• Unexpected data record count
• Duplicates

Check if the declared data types in the metadata match the observed data types in the study data.

• Data type mismatch