Index: /issm/trunk-jpl/src/m/parameterization/setflowequation.m
===================================================================
--- /issm/trunk-jpl/src/m/parameterization/setflowequation.m	(revision 15858)
+++ /issm/trunk-jpl/src/m/parameterization/setflowequation.m	(revision 15859)
@@ -55,5 +55,5 @@
 %check that each element has at least one flag
 if any(SIAflag+SSAflag+HOflag+L1L2flag+FSflag==0),
-	error('elements type not assigned, must be specified')
+	error('elements type not assigned, supported models are ''SIA'',''SSA'',''HO'' and ''FS''')
 end
 
Index: /issm/trunk-jpl/src/m/parameterization/setflowequation.py
===================================================================
--- /issm/trunk-jpl/src/m/parameterization/setflowequation.py	(revision 15858)
+++ /issm/trunk-jpl/src/m/parameterization/setflowequation.py	(revision 15859)
@@ -59,5 +59,5 @@
 	#check that each element has at least one flag
 	if not any(SIAflag+SSAflag+L1L2flag+HOflag+FSflag):
-		raise TypeError("elements type not assigned, must be specified")
+		raise TypeError("elements type not assigned, supported models are 'SIA','SSA','HO' and 'FS'")
 
 	#check that each element has only one flag