If the author instance tries to publish content to a public instance
without a valid license or invalid edition, you will see the following in the log:
Invalid receiver. Either your public instance is the Community Edition or the DX Core license is invalid.
To resolve this issue, see the section on updating a key on the
License page.
In some cases, your license is valid but you have different Magnolia
versions running in the Author and Public instances.
In this scenario, check the value of the
/server/filters/multipartRequest/@enabled parameter. It must be set to
true.
In some circumstances, you may need to set the parameter to false, for
example to get REST calls to work with attachments. If this applies to
your case, use a bypass: