Transaction not yet indexed

PopA4apXFAPXDhYgF6XHz3haZpwiMNrhfsfbAGDFHHSEafsmSVEjSKbQy8LE5VmaBHVpdBtq5mvYEW8NnZZCvr2

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