diff --git a/doc/src/Errors_messages.txt b/doc/src/Errors_messages.txt
index fb5003e602..7f6e80948c 100644
--- a/doc/src/Errors_messages.txt
+++ b/doc/src/Errors_messages.txt
@@ -5729,6 +5729,16 @@ definitions. :dd
 
 The data file header lists improper but no improper types. :dd
 
+{Incompatible KIM Simulator Model} :dt
+
+The requested KIM Simulator Model was defined for a different MD code
+and thus is not compatible with LAMMPS. :dd
+
+{Incompatible units for KIM Simulator Model} :dt
+
+The selected unit style is not compatible with the requested KIM
+Simulator Model. :dd
+
 {Incomplete use of variables in create_atoms command} :dt
 
 The var and set options must be used together. :dd
@@ -6988,6 +6998,12 @@ The atom style defined does not have this attribute. :dd
 
 The atom style defined does not have these attributes. :dd
 
+{KIM Simulator Model has no Model definition} :dt
+
+There is no model definition (key: model-defn) in the KIM Simulator
+Model.  Please contact the OpenKIM database maintainers to verify
+and potentially correct this. :dd
+
 {KOKKOS package does not yet support comm_style tiled} :dt
 
 Self-explanatory. :dd
@@ -7475,6 +7491,18 @@ Self-explanatory. :dd
 
 Self-explanatory. :dd
 
+{Must use 'kim_style init' command before simulation box is defined} :dt
+
+Self-explanatory. :dd
+
+{Must use 'kim_style define' command after simulation box is defined} :dt
+
+Self-explanatory. :dd
+
+{Must use 'kim_style init' command before 'kim_style define'} :dt
+
+Self-explanatory. :dd
+
 {Must use 'kspace_modify pressure/scalar no' for rRESPA with kspace_style MSM} :dt
 
 The kspace scalar pressure option cannot (yet) be used with rRESPA. :dd
@@ -9418,6 +9446,11 @@ See the "read_data extra/special/per/atom" command
 for info on how to leave space in the special bonds
 list to allow for additional bonds to be formed. :dd
 
+{Species XXX is not supported by this KIM Simulator Model} :dt
+
+The kim_style define command was referencing a species that is not
+present in the requested KIM Simulator Model. :dd
+
 {Specified processors != physical processors} :dt
 
 The 3d grid of processors defined by the processors command does not
diff --git a/src/KIM/kim_style.h b/src/KIM/kim_style.h
index eddc22eebc..f8c0602beb 100644
--- a/src/KIM/kim_style.h
+++ b/src/KIM/kim_style.h
@@ -85,34 +85,34 @@ class KimStyle : protected Pointers {
 
 E: Illegal kim_style command
 
-Incorrect number or kind of arguments to kim_style
+Incorrect number or kind of arguments to kim_style.
 
 E: Must use 'kim_style init' command before simulation box is defined
 
-Self-explanatory
+Self-explanatory.
 
 E: Must use 'kim_style define' command after simulation box is defined
 
-Self-explanatory
+Self-explanatory.
 
 E: Must use 'kim_style init' command before 'kim_style define'
 
-Self-explanatory
+Self-explanatory.
 
 E: Incompatible KIM Simulator Model
 
 The requested KIM Simulator Model was defined for a different MD code
-and thus is not compatible with LAMMPS
+and thus is not compatible with LAMMPS.
 
 E: Species XXX is not supported by this KIM Simulator Model
 
 The kim_style define command was referencing a species that is not
-present in the requested KIM Simulator Model
+present in the requested KIM Simulator Model.
 
 E: Incompatible units for KIM Simulator Model
 
 The selected unit style is not compatible with the requested KIM
-Simulator Model
+Simulator Model.
 
 E: KIM Simulator Model has no Model definition