Transaction not yet indexed

MECfrkvGDBLAwmkDxYRYxKTMbESKqhvbpuUZ44Up5eV7ziWSq9ntJshcDacW2HmYHHWVYg6BPFoMeWYTjgFKTu2

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