Transaction not yet indexed

21f6ZiyYSACFDSb3VnKMXntHZ43fr2KqMcxru9xwTUnwnxi6RTwe55P1QeSUr4fL67LSNPsYjWcqDEw6yTVVQVHT

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