Transaction not yet indexed

mc2u52grDqFA3ZtKKmGbD1GbPj2saQuFC1KdZbmR6kLqieAxFmmRAVHUmv8iXPYPLEogppDzNVCVQe8tLCYGGRR

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