Transaction not yet indexed

638TdujVZwq3jqQkY5uMPcurTRrcMbfkxaMEoch6dmSGspaUEsYstdQmTQCbMHVSVJSz3CJxxw2DLXivTahN1pNM

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