Transaction not yet indexed

MdU3fDdH8CYoSccvfSLZqLzRBMhi4am2bNmiG5BDLhAnr1ehQh6gSptwPdeJ1kytChbUsMLMVRLcyMq2TPTQqwE

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