Error codes · Declarations and their clauses
PW0366
migration_unstated
The program must hold to this: a change from the schema released that loses or reinterprets data is stated by a migrate, and each migrate states one.
Reading the diagnostic
pw check prints the code in brackets, [PW0366], with the sentence above and the place in your program. Errors and diagnostics explains how to read one, and every code is listed with its rule.