Transaction not yet indexed

21Ab4iHp6siSdxaftu2m5KmpPnnxeBSB7EvGenCJdPMscPC3HULVNxApk88U2hr4H2GqEJ7Btfj6CfCcqyPyhUy7

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