Why does the class that implements the interface have @Data and@Accessors(chain = true) that need to override the set method but not the get method?

I have an interface

public interface IBaseHistory {
    String getCoId();
    void setPhysicalData(PhysicalData physicalData);
}

And a class that implements it,

@Data
@Accessors(chain = true)
public class FunctionHistory  implements Serializable, IBaseHistory {
    private String coId;
    private PhysicalData physicalData;
}

Which says:

entity.FunctionHistory is not abstract and does not override the abstract method setPhysicalData(service.IBaseHistory.entity.PhysicalData)

I deleted the setPhysicalData method and the program was able to compile.

You used @Accessors(chain = true). With that will Lombok generate this:

public class FunctionHistory implements IBaseHistory {

   // fields

   public FunctionHistory setPhysicalData(PhysicalData physicalData) {
      this.physicalData = physicalData;
      return this;
   }

   // some more
}

This is not matching your interface.

And here are some options:

1. Remove @Accessors(chain = true)
2. Change the interface
3. Put @Accessors(chain = false) onto your field.

And here are the related Lombok docs:
https://projectlombok.org/features/experimental/Accessors