The output references mentioned here are duplicated. Composer will rename the references to (Copy1…), (Copy2…), etc. You may wish to change the reference first using this list.
If you plan to convert this project to Composer, you will have to resolve each of these.
If you are building multiple Composer projects, this message will show you references that will need to be changed to allow you to merge the projects.
--Generating list of duplicate global OREFs. Duplicate global OREF '4132': Module 2,03,08 Block 4132, Module 2,29,05 Block 4966. Duplicate global OREF '4356': Module 2,01,05 Block 4356, Module 2,04,04 Block 623.
This error can be built directly into Hyperview. For more information, see the article Building error reports into the M14.