Transaction not yet indexed

21mExX63w5KBGCg1uSTwC1njzUcnXbBEVdbUVMfS3P7qJgBNh5mmvbJHzPhmP1wTQGus3biNyEf5kPXokCexev9t

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