Transaction not yet indexed

MU3eXeERAi43cUe3DH4KbKAj2s8AQ6xaPSRn3ymLuz1sGdNNYfZ6Am1pCNeKvp8FhZrc1jpFNd1d32xs4kcKbH8

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