This kind of message is primarily a development aid, and should not be seen by the user in production status. Two parts of PowerExchange are communicating with each other through a character string in internal SQL format. The receiving software does not recognize the 'request type' verb in the SQL, which is displayed in the message for debugging.
The internal request is abandoned, and processing ends.
Contact Informatica Global Customer Support for support on which traces are required, along with information on the software level being used. At least the 'DTLAMMQS' trace is needed.