Interoperability/Integration through schema migration

This is the question I am musing:

Is interoperability/integration between various ledgers a schema migration
problem? (at least in part?)

-Brent

also

Bjorn Hamel mentions shapes;
https://www.youtube.com/watch?v=Uu651GJ5YY0
(Adventures in Self-Sovereign Identity: From...- June 28 | Identiverse 2019)

maybe he means in this light?: https://www.w3.org/TR/shacl/