Dependency code outdated: &1 &2 &3 &4

What causes this issue?

The dependency compilation for dependency &v1& (dependency type &v2&)
could not be converted to the format required for the download. It was
recognized that the compilation was compiled with compiler version &v3&
&v4&.

System Response

Error message during download.

How to fix this error?

Regenerate the net.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.