MSIR.0656 GET received while waiting for POST - session terminated
A $Web_Form_Done was waiting for the POST of a form but, instead, received a GET — possibly caused by a browser reload requested by the end-user, or the end-user navigating away from the form and back. This error will only occur if the NOGET parameter was specified on the $Web_Form_Done.
Since this can happen in the normal course of processing, it might be worth revisiting the reasons for specifying NOGET on $Web_Form_Done. If there is no good reason for the NOGET, remove it.