Transaction not yet indexed

SEQM18Wt4qBqLWfj4qxtSA8AdupTdraH6zqFt7kGDESUX3PaTrgZ5PH5faeX8f4DZBQDdWRetkQmvmVLTgxwbP3

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