"Release in Processing" - What Does It Mean?

What happens when submitting your music for distribution

On Family in Music Distribution, once you have created your asset and distributed it for release, our team will double-check the assets and metadata to make sure that everything is according to DSP requirements and either correct it, validate the release for distribution or send it back to you with the appropriate notes in order to resolve the issues.

In case that the assets need some substantial modifications, the Team will notify you with notes on how to fix the issues.

In order to speed up this distribution process, we highly recommend always review the metadata carefully before submitting it. 

For more information on metadata, you can refer to this document by Music Business Association.