Transaction not yet indexed

MECvC645STNAsXRYdAsfgZxrm3w2jHMVtkKCjLmbbeWuFcdrqg1MoJhmBwd3Pt3hRQsfn9ZShvAtQuJJSjxq3Wy

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