Transaction not yet indexed

Ack4SgYBp2ud3tHZgUDhfxfub37gmnLjiHsm5qbWJZKCAAbDQCDRGZpZDx9qvUegb41RTCs2WzYtAjSp4zaFUPT

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