Transaction not yet indexed

AMpFpmd28KTWZnKk8pj8VsTsTvADHzuyPLnVdFrUVRjtcyaZW9aiPtepCQKpQPGoWJeESb8u4J1upW5mzTgX8wk

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