Below are common Mapper errors. Click on an error to expand it and view instructions on troubleshooting and resolving it.

Mapping Error

• Error executing domain: [Domain_Name] in Mapping: [Mapping_Name], Cannot find either column 'Column_Name' or the user-defined function or aggregate 'Function_Name', or the name is ambiguous.
  During the import process, a mapping attempted to call a column or user-defined function that could not be resolved, often due to the mapping relying on a standard global function, and the incoming data broke its expected parameters. Open Mapper to locate the domain and mapping mentioned in the message, then verify the column and function references against the study’s metadata and source data. If the import must proceed, rerun it with Skip Mapping selected to load the data without executing mappings, and run the mapping manually after correcting the issue. If the problem persists, escalate to a technical services team member.