Transaction not yet indexed

iosPLMLg8b3V44GCqa6sctJyhSkSrvjZNQahkSdNDFE68L4EnKzW3X1P3dM8EAJDbcwEweq9CPWcH5HJvkt3jm8

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