diff --git a/common/djangoapps/student/management/commands/pearson_export_cdd.py b/common/djangoapps/student/management/commands/pearson_export_cdd.py
index fedf6dfae1..67230c7f74 100644
--- a/common/djangoapps/student/management/commands/pearson_export_cdd.py
+++ b/common/djangoapps/student/management/commands/pearson_export_cdd.py
@@ -2,7 +2,6 @@ import csv
 from collections import OrderedDict
 from datetime import datetime
 from os.path import isdir
-from fs.path import pathjoin
 from optparse import make_option
 
 from django.core.management.base import BaseCommand
@@ -68,7 +67,7 @@ class Command(BaseCommand):
         # used in the system.
         dest = args[0]
         if isdir(dest):
-            destfile = pathjoin(dest, uploaded_at.strftime("cdd-%Y%m%d-%H%M%S.dat"))
+            destfile = os.path.join(dest, uploaded_at.strftime("cdd-%Y%m%d-%H%M%S.dat"))
         else:
             destfile = dest
         
@@ -100,4 +99,4 @@ class Command(BaseCommand):
                     tcu.save()
 
 
-        
\ No newline at end of file
+        
diff --git a/common/djangoapps/student/management/commands/pearson_export_ead.py b/common/djangoapps/student/management/commands/pearson_export_ead.py
index 0e5ffb0243..de3bfc04ee 100644
--- a/common/djangoapps/student/management/commands/pearson_export_ead.py
+++ b/common/djangoapps/student/management/commands/pearson_export_ead.py
@@ -1,8 +1,7 @@
 import csv
 from collections import OrderedDict
 from datetime import datetime
-from os.path import isdir
-from fs.path import pathjoin
+from os.path import isdir, join
 from optparse import make_option
 
 from django.core.management.base import BaseCommand
@@ -61,7 +60,7 @@ class Command(BaseCommand):
         # used in the system.
         dest = args[0]
         if isdir(dest):
-            destfile = pathjoin(dest, uploaded_at.strftime("ead-%Y%m%d-%H%M%S.dat"))
+            destfile = join(dest, uploaded_at.strftime("ead-%Y%m%d-%H%M%S.dat"))
         else:
             destfile = dest
 
@@ -90,6 +89,5 @@ class Command(BaseCommand):
                     tcr.save()
 
 
-  
 
-        
\ No newline at end of file
+        
diff --git a/common/djangoapps/student/management/commands/pearson_make_tc_registration.py b/common/djangoapps/student/management/commands/pearson_make_tc_registration.py
index 5536844cab..81a478d19d 100644
--- a/common/djangoapps/student/management/commands/pearson_make_tc_registration.py
+++ b/common/djangoapps/student/management/commands/pearson_make_tc_registration.py
@@ -37,11 +37,13 @@ class Command(BaseCommand):
             '--eligibility_appointment_date_first',
             action='store',
             dest='eligibility_appointment_date_first',
-        ),        
+            help='use YYYY-MM-DD format if overriding existing course values, or YYYY-MM-DDTHH:MM if not using an existing course.'
+        ),
         make_option(
             '--eligibility_appointment_date_last',
             action='store',
             dest='eligibility_appointment_date_last',
+            help='use YYYY-MM-DD format if overriding existing course values, or YYYY-MM-DDTHH:MM if not using an existing course.'
         ),
         # internal values:
         make_option(
@@ -67,11 +69,11 @@ class Command(BaseCommand):
             '--ignore_registration_dates',
             action='store_true',
             dest='ignore_registration_dates',
-            help='find exam info for course based on exam_series_code, even if it is not active.'
+            help='find exam info for course based on exam_series_code, even if the exam is not active.'
         ),   
     )
     args = "<student_username course_id>"
-    help = "Create a TestCenterRegistration entry for a given Student"
+    help = "Create or modify a TestCenterRegistration entry for a given Student"
 
     @staticmethod
     def is_valid_option(option_name):
@@ -86,11 +88,15 @@ class Command(BaseCommand):
 
         our_options = dict((k, v) for k, v in options.items()
                            if Command.is_valid_option(k) and v is not None)
-        student = User.objects.get(username=username)
+        try:
+            student = User.objects.get(username=username)
+        except User.DoesNotExist:
+            raise CommandError("User \"{}\" does not exist".format(username))
+
         try:
             testcenter_user = TestCenterUser.objects.get(user=student)
         except TestCenterUser.DoesNotExist:
-            raise CommandError("User {%s} does not exist".format(student))
+            raise CommandError("User \"{}\" does not have an existing demographics record".format(username))
             
         # check to see if a course_id was specified, and use information from that:
         try:
diff --git a/common/djangoapps/student/management/commands/pearson_make_tc_user.py b/common/djangoapps/student/management/commands/pearson_make_tc_user.py
index 57ee78e391..da9bfc3bd0 100644
--- a/common/djangoapps/student/management/commands/pearson_make_tc_user.py
+++ b/common/djangoapps/student/management/commands/pearson_make_tc_user.py
@@ -125,7 +125,7 @@ class Command(BaseCommand):
         ),   
     )
     args = "<student_username>"
-    help = "Create a TestCenterUser entry for a given Student"
+    help = "Create or modify a TestCenterUser entry for a given Student"
 
     @staticmethod
     def is_valid_option(option_name):
diff --git a/common/djangoapps/student/models.py b/common/djangoapps/student/models.py
index bfa7077176..d8e38170c8 100644
--- a/common/djangoapps/student/models.py
+++ b/common/djangoapps/student/models.py
@@ -229,13 +229,13 @@ class TestCenterUser(models.Model):
         return False    
                        
     @staticmethod
-    def _generate_edx_id():
+    def _generate_edx_id(prefix):
         NUM_DIGITS = 12
-        return u"edX{:012}".format(randint(1, 10**NUM_DIGITS-1))
+        return u"{}{:012}".format(prefix, randint(1, 10**NUM_DIGITS-1))
     
     @staticmethod
     def _generate_candidate_id():
-        return TestCenterUser._generate_edx_id()
+        return TestCenterUser._generate_edx_id("edX")
         
     @staticmethod
     def create(user):
@@ -283,15 +283,12 @@ class TestCenterUserForm(ModelForm):
         except UnicodeEncodeError:
             return False
         return True
-    
-    def check_country_code(self, fieldname):
-        code = self.cleaned_data[fieldname]
+        
+    def clean_country(self):
+        code = self.cleaned_data['country']
         if code and len(code) != 3:
             raise forms.ValidationError(u'Must be three characters (ISO 3166-1):  e.g. USA, CAN, MNG')
         return code
-        
-    def clean_country(self):
-        return self.check_country_code('country')
                 
     def clean(self):
         cleaned_data = super(TestCenterUserForm, self).clean()
@@ -434,7 +431,7 @@ class TestCenterRegistration(models.Model):
     def create(testcenter_user, exam, accommodation_request):
         registration = TestCenterRegistration(testcenter_user = testcenter_user)
         registration.course_id = exam.course_id
-        registration.accommodation_request = accommodation_request
+        registration.accommodation_request = accommodation_request.strip()
         registration.exam_series_code = exam.exam_series_code
         registration.eligibility_appointment_date_first = strftime("%Y-%m-%d", exam.first_eligible_appointment_date)
         registration.eligibility_appointment_date_last = strftime("%Y-%m-%d", exam.last_eligible_appointment_date)
@@ -444,7 +441,7 @@ class TestCenterRegistration(models.Model):
 
     @staticmethod
     def _generate_authorization_id():
-        return TestCenterUser._generate_edx_id()
+        return TestCenterUser._generate_edx_id("edXexam")
         
     @staticmethod
     def _create_client_authorization_id():
@@ -526,13 +523,19 @@ class TestCenterRegistrationForm(ModelForm):
     class Meta:
         model = TestCenterRegistration
         fields = ( 'accommodation_request', 'accommodation_code' )
+
+    def clean_accommodation_request(self):
+        code = self.cleaned_data['accommodation_request']
+        if code and len(code) > 0:
+            return code.strip()
+        return code
         
     def update_and_save(self):
         registration = self.save(commit=False)
         # create additional values here:
         registration.user_updated_at = datetime.utcnow()
         registration.save()
-        log.info("Updated registration information for user's test center exam registration: username \"{}\" course \"{}\", examcode \"{}\"".format(registration.testcenter_user.username, registration.course_id, registration.exam_series_code)) 
+        log.info("Updated registration information for user's test center exam registration: username \"{}\" course \"{}\", examcode \"{}\"".format(registration.testcenter_user.user.username, registration.course_id, registration.exam_series_code)) 
 
     # TODO: add validation code for values added to accommodation_code field.
     
diff --git a/lms/templates/dashboard.html b/lms/templates/dashboard.html
index 34c8d0ecc3..0182a8edf1 100644
--- a/lms/templates/dashboard.html
+++ b/lms/templates/dashboard.html
@@ -237,7 +237,7 @@
                     % if registration.is_accepted:  
                 <div class="message message-status is-shown exam-schedule">
                    <a href="${registration.registration_signup_url}" class="button exam-button">Schedule Pearson exam</a>
-                   <p class="exam-registration-number"><a href="${testcenter_register_target}" id="exam_register_link">Registration</a> number: <strong>${registration.client_authorization_id}</strong></p>
+                   <p class="exam-registration-number"><a href="${testcenter_register_target}" id="exam_register_link">Registration</a> number: <strong>${registration.client_candidate_id}</strong></p>
                    <p class="message-copy">Write this down! You’ll need it to schedule your exam.</p>
                 </div>
                     % endif
diff --git a/lms/templates/test_center_register.html b/lms/templates/test_center_register.html
index 6ff1d1caec..03883d907c 100644
--- a/lms/templates/test_center_register.html
+++ b/lms/templates/test_center_register.html
@@ -113,7 +113,7 @@
     % if registration.is_accepted:
     <section class="status message message-flash registration-processed message-action is-shown">
       <h3 class="message-title">Your registration for the Pearson exam has been processed</h3>
-      <p class="message-copy">Your registration number is <strong>${registration.client_authorization_id}</strong>.  (Write this down! You’ll need it to schedule your exam.)</p>
+      <p class="message-copy">Your registration number is <strong>${registration.client_candidate_id}</strong>.  (Write this down! You’ll need it to schedule your exam.)</p>
       <a href="${registration.registration_signup_url}" class="button exam-button">Schedule Pearson exam</a>
     </section>
     % endif