[issue-4283] ssm put_parameter with tags and overwrite should error (#4362)

moto/ssm/models.py

@@ -1547,6 +1547,12 @@ class SimpleSystemManagerBackend(BaseBackend):
                 "1 validation error detected: Value '' at 'value' failed to satisfy"
                 " constraint: Member must have length greater than or equal to 1."
             )
+        if overwrite and tags:
+            raise ValidationException(
+                "Invalid request: tags and overwrite can't be used together. To create a "
+                "parameter with tags, please remove overwrite flag. To update tags for an "
+                "existing parameter, please use AddTagsToResource or RemoveTagsFromResource."
+            )
         if name.lower().lstrip("/").startswith("aws") or name.lower().lstrip(
             "/"
         ).startswith("ssm"):

tests/test_ssm/test_ssm_boto3.py

@@ -279,6 +279,19 @@ def test_put_parameter(name):
         "arn:aws:ssm:us-east-1:{}:parameter/{}".format(ACCOUNT_ID, name)
     )
     new_data_type = "aws:ec2:image"
+
+    with pytest.raises(ClientError) as ex:
+        response = client.put_parameter(
+            Name=name,
+            Description="desc 3",
+            Value="value 3",
+            Type="String",
+            Overwrite=True,
+            Tags=[{"Key": "foo", "Value": "bar"}],
+            DataType=new_data_type,
+        )
+    assert ex.value.response["Error"]["Code"] == "ValidationException"
+
     response = client.put_parameter(
         Name=name,
         Description="desc 3",