Transaction not yet indexed

AmPCGjSMAvXtkP3GzGgMMQHGfPfWzvhZLgboSd9u7XgbvHsMyvqjqvaD1gZoVXfgJgrPayPKPrAQc1PyBAAvnfU

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