Missing inputs with exchange

Question

Hello.

  I running exchange with two client.A ,B.

 NodeA run [prerparelockunspent (return txid:11111) and createrawexchange] success..

NodeB run [prerparelockunspent] success 

and run [appendrawexchange] i got fail [Missing inputs; Input: 0, txid: 1111111, vout: 0]

This problem is not everytime. I can't find the reason for that.

I just have two node, and i don't run other api.

so What is the possibility of this problem. Thx

Comments

Please post a full transcript (including commands and responses) of node B's preparelockunspent and appendrawexchange calls.