Transaction not yet indexed

PmmkGKrhQNFDvDMGdC4FBMzzaYx4a7aRZijRXe95japhZ6SeHwpW9VCRdqVxH8RdrV6anJpKNe1pNj7PUFc4t44

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