Transaction not yet indexed

Mc6ygtfUBTqMGQvxmt1BcgQ8C2SA6fDvDUYzipq8CidGKd3d2oCz7aDeRAxB7XJfgkyDuJxBD6dk8hM4uXGFFS4

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.