Transaction not yet indexed

1nMK18c5dsvxVG581LfQbdM1g6HQsE3GUYthdYAVMdS3nGXJxR2DdDtf54tTDueBGptDrXqjBQa2bMoRGDCCLS4

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