com.wm.app.b2b.util.tx.TXJobException: [B2BCORE.0063.9116] [

Hi we are getting this message very frequently

com.wm.app.b2b.util.tx.TXJobException: [B2BCORE.0063.9116] [TxMgr] Duplicate request

Could somebody explain what this could be

IS Server : 4.6