Transaction not yet indexed

15MmRgkvSMiWXa97EEQE7WuPRD7BymNhB5KhX112r37sgPEmbemtrFmzdfhZWeyp7qAe1Ue4Rds6NG2c5YSJFm4

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