Transaction not yet indexed

521UfZ1VEXN3oqcH27JRSTBneXTdXTfVq7DVKRBtS9WUfmW2t4RkXS55RGDUrkBeVWkeCYe6zC8UVozRffcdCsS2

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