biztalk file adapter

#12112

hai,
Could not find a matching subscription for the message.
The Messaging engine failed to process a message submitted by adapter:FILE Source URL:C:\\test\\Receive\\*.xml. Details:Could not find a matching subscription for the message. . This error occurs if the subscribed orchestration schedule or send port has not been started, or if some of the message properties necessary for subscription evaluation have not been promoted.

This occurs when I am using file adapter in biztalk.My send ports are well started.Can somebody help me?