Transaction not yet indexed

mp4CCUNERg9mKteoX97jsfeLd2hgh5S5wvZaaEP9JKRKGDmCVMCrLqDm6ZSMeZ1LdtBJwo2gdkcTSrFhbZwbBij

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