diff --git a/src/dash_cli.jl b/src/dash_cli.jl
index ff53ee5..fc29afb 100644
--- a/src/dash_cli.jl
+++ b/src/dash_cli.jl
@@ -37,6 +37,7 @@ function dash(args; kws...)
     else
         # Wrong arguments
         @error "Unrecognized argument"
+        result = nothing
     end
 
     #to do more?
diff --git a/src/data_cli.jl b/src/data_cli.jl
index 144afc8..4c8a808 100644
--- a/src/data_cli.jl
+++ b/src/data_cli.jl
@@ -39,6 +39,7 @@ function data(args; kws...)
     else
         # Wrong arguments
         @error "Unrecognized argument"
+        rslt = nothing
     end
 
     return rslt
diff --git a/src/model_cli.jl b/src/model_cli.jl
index a9a06a6..a1b5df6 100644
--- a/src/model_cli.jl
+++ b/src/model_cli.jl
@@ -38,6 +38,7 @@ function model(args; kws...)
     else
         # Wrong arguments
         @error "Unrecognized argument"
+        rslt = nothing
     end
 
     #to do more?
diff --git a/test/controller_cli_test.jl b/test/controller_cli_test.jl
index d0744e8..09f8e23 100644
--- a/test/controller_cli_test.jl
+++ b/test/controller_cli_test.jl
@@ -574,4 +574,51 @@ end
 
 end
 
+@testset "Controller error message test" begin
+
+    rslt = controller(:ki)
+    @test rslt == nothing
+
+    rslt = controller(:ls, project_ = "1")
+    @test rslt == nothing
+
+    rslt = controller(:rm, project = "1")
+    @test rslt == nothing
+
+    rslt = controller(:rm, project_name = "1")
+    @test rslt == nothing
+
+    rslt = controller(:tune, project = "1")
+    @test rslt == nothing
+
+    rslt = controller(:tune, project_name = "1")
+    @test rslt == nothing
+
+    rslt = controller(:tune, project_name = "1", system_name = "1")
+    @test rslt == nothing
+
+    rslt = controller(:tune, project_name = "1", system_name = "1", mpc_horizon = 1)
+    @test rslt == nothing
+
+    rslt = controller(:tune, project_name = "1", system_name = "1", mpc_horizon = 1, mpc_sample_time = 5)
+    @test rslt == nothing
+
+    rslt = controller(:tune, project_name = "1", system_name = "1", mpc_horizon = 1, mpc_sample_time = 5, mpc_state_reference = 1)
+    @test rslt == nothing
+
+    rslt = controller(:calculate)
+    @test rslt == nothing
+
+    rslt = controller(:calculate, initialization = 1)
+    @test rslt == nothing
+
+    #rslt = controller(:calculate, initialization = 1, controller_name = "1")
+    #@test rslt == nothing
+
+    rslt = controller(:retrieve)
+    @test rslt == nothing
+
+end
+
+
 end
diff --git a/test/dash_cli_test.jl b/test/dash_cli_test.jl
index dc5a361..04f5612 100644
--- a/test/dash_cli_test.jl
+++ b/test/dash_cli_test.jl
@@ -210,4 +210,50 @@ end
    
 end
 
+@testset "Dash error message test" begin
+
+    rslt = dash(:ki)
+    @test rslt == nothing
+
+    rslt = dash(:rawdata, project_ = "1")
+    @test rslt == nothing
+
+    rslt = dash(:rawdata, project_name = "1")
+    @test rslt == nothing
+
+    rslt = dash(:rawdata, project_name = "1", data_name = "1")
+    @test rslt == nothing
+
+    rslt = dash(:rawdata, project_name = "1", data_name = "1", recipe = "1")
+    @test rslt == nothing
+
+    rslt = dash(:iodata, project_ = "1")
+    @test rslt == nothing
+
+    rslt = dash(:iodata, project_name = "1")
+    @test rslt == nothing
+
+    rslt = dash(:iodata, project_name = "1", data_name = "1")
+    @test rslt == nothing
+
+    rslt = dash(:iodata, project_name = "1", data_name = "1", recipe = "1")
+    @test rslt == nothing
+
+    rslt = dash(:model, project_ = "1")
+    @test rslt == nothing
+
+    rslt = dash(:model, project_name = "1")
+    @test rslt == nothing
+
+    rslt = dash(:ls, project = "1")
+    @test rslt == nothing
+
+    rslt = dash(:rm, project = "1")
+    @test rslt == nothing
+
+    rslt = dash(:rm, project_name = "1")
+    @test rslt == nothing
+
+end
+
 end
diff --git a/test/data_cli_test.jl b/test/data_cli_test.jl
index 36430b1..b0c6a4e 100644
--- a/test/data_cli_test.jl
+++ b/test/data_cli_test.jl
@@ -76,4 +76,54 @@ using AutomationLabs
 
 end
 
+@testset "Data error message test" begin
+
+    rslt = data(:ki)
+    @test rslt == nothing
+
+    rslt = data(:add, project_ = "1")
+    @test rslt == nothing
+
+    rslt = data(:add, project = "1")
+    @test rslt == nothing
+
+    rslt = data(:add, project_name = "1")
+    @test rslt == nothing
+
+    rslt = data(:add, project_name = "1", path = "1")
+    @test rslt == nothing
+
+    rslt = data(:lsio, project = "1")
+    @test rslt == nothing
+
+    rslt = data(:lsraw, project = "1")
+    @test rslt == nothing
+
+    rslt = data(:rmio, project = "1")
+    @test rslt == nothing
+
+    rslt = data(:rmraw, project = "1")
+    @test rslt == nothing
+
+    rslt = data(:rmio, project_name = "1")
+    @test rslt == nothing
+
+    rslt = data(:rmraw, project_name = "1")
+    @test rslt == nothing
+
+    rslt = data(:io, project = "1")
+    @test rslt == nothing
+
+    rslt = data(:io, project_name = "1")
+    @test rslt == nothing
+
+    rslt = data(:io, project_name = "1", inputs_data_name = "1")
+    @test rslt == nothing
+
+    #rslt = data(:io, project_name = "1", inputs_data_name = "1", outputs_data_name = "1")
+    #@test rslt == nothing
+    # Add a protect
+
+end
+
 end
diff --git a/test/exportation_cli_test.jl b/test/exportation_cli_test.jl
index 0fd0f8b..43f5bd2 100644
--- a/test/exportation_cli_test.jl
+++ b/test/exportation_cli_test.jl
@@ -207,4 +207,32 @@ using Dates
 
 end
 
+@testset "Exportation error message test" begin
+
+    rslt = exportation(:ki)
+    @test rslt == nothing
+
+    rslt = exportation(:ls, project_ = "1")
+    @test rslt == nothing
+
+    rslt = exportation(:rm, project = "1")
+    @test rslt == nothing
+
+    rslt = exportation(:rm, project_name = "1")
+    @test rslt == nothing
+
+    rslt = exportation(:tune, project = "1")
+    @test rslt == nothing
+
+    rslt = exportation(:tune, project_name = "1")
+    @test rslt == nothing
+
+    rslt = exportation(:tune, project_name = "1", model_name = "1")
+    @test rslt == true #should be false or nothing
+
+    #rslt = exportation(:tune, project_name = "1", controller_name = "1")
+    #@test rslt == true
+
+end
+
 end
\ No newline at end of file
diff --git a/test/model_cli_test.jl b/test/model_cli_test.jl
index a8163d9..13a58b8 100644
--- a/test/model_cli_test.jl
+++ b/test/model_cli_test.jl
@@ -187,5 +187,54 @@ end
 
 end
 
+@testset "Model error message test" begin
+
+    rslt = model(:ki)
+    @test rslt == nothing
+
+    rslt = model(:tune, projectç = "1")
+    @test rslt == nothing
+
+    rslt = model(:tune, project_name = "1")
+    @test rslt == nothing
+
+    #rslt = model(:tune, project_name = "1", io = "1") return issue
+    #@test rslt == nothing
+
+    rslt = model(:ls, projectc = "1")
+    @test rslt == nothing
+
+    rslt = model(:rm, project = "1")
+    @test rslt == nothing
+
+    rslt = model(:rm, project_name = "1")
+    @test rslt == nothing
+
+    rslt = model(:stats, project = "1")
+    @test rslt == nothing
+
+    rslt = model(:stats, project_name = "1")
+    @test rslt == nothing
+
+    rslt = model(:create, project = "1")
+    @test rslt == nothing
+
+    rslt = model(:create, project_name = "1")
+    @test rslt == nothing
+
+    rslt = model(:create, project_name = "1", model_anme = "1")
+    @test rslt == nothing
+
+    rslt = model(:create, project_name = "1", model_anme = "1", nbr_state = 2)
+    @test rslt == nothing
+
+    rslt = model(:create, project_name = "1", model_anme = "1", nbr_state = 2, nbr_input = 2)
+    @test rslt == nothing
+
+    rslt = model(:create, project_name = "1", model_anme = "1", nbr_state = 2, nbr_input = 2, variation = "1")
+    @test rslt == nothing
+
+end
+
 
 end
diff --git a/test/project_cli_test.jl b/test/project_cli_test.jl
index 76e1027..87edaa3 100644
--- a/test/project_cli_test.jl
+++ b/test/project_cli_test.jl
@@ -52,6 +52,9 @@ end
     rslt = project(:rm, name = "gt")
     @test rslt == false
 
+    rslt = project(:rm, namez = "gt")
+    @test rslt == nothing
+
     rslt = project(:rm, name = pjt[1])
     @test rslt == true
 
diff --git a/test/system_cli_test.jl b/test/system_cli_test.jl
index e88c3bd..db2d8c3 100644
--- a/test/system_cli_test.jl
+++ b/test/system_cli_test.jl
@@ -329,6 +329,8 @@ end
     system(:ls, project_name = "qtp_test", show_all = true)
     rslt = system(:ls, project_name = "gt")
     @test size(rslt) == (0, 6)
+    rslt = system(:ls, project_namezz = "gt")
+    @test rslt == nothing
 
     # Wrong rm 
     rslt = system(:rm, project_name = "qtp_test")