Transaction not yet indexed

MJRWXm18uihcwV1tkSUmsaDF3CVSHEYZFBrM1JScCS3euzWyTdqS6Q2UQg3EvDWFv91dz5aWSpHK1ZGBW8F5Thx

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