Transaction not yet indexed

MLtNS1simzWGQBdXRu3zxFTMcCaSvBGT2M45VBk5PBpnJBH22WmDfbSRgdm7NAJxqJw9ehgg3gDpanFZphwi1RC

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