Transaction not yet indexed

MZREM3BmRrz7ESJfRu3Kah7LyZM8v8h22BQvekqvhJ5p5tdvtJNJWpDZCTfysfCZX2qeaCA2MbQQAAtADWP8XSN

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