diff --git a/src/yatter/constants.py b/src/yatter/constants.py
index c5aad0a..96d57c2 100644
--- a/src/yatter/constants.py
+++ b/src/yatter/constants.py
@@ -124,27 +124,17 @@
 
 YARRRML_MAPPINGS = 'mappings' # used for mappings in conditions and mappings main key
 YARRRML_MAPPING = 'mapping'
-YARRRRL_MAPPINGS_SHORTCUT = 'm'
 
-YARRRML_SUBJECTS_SHORTCUT = 's'
-YARRRML_SUBJECT = 'subject'
 YARRRML_SUBJECTS = 'subjects'
 
 YARRRML_GRAPHS = 'graphs'
-YARRRML_GRAPH = 'graph'
-YARRRML_GRAPH_SHORTCUT = 'g'
 
 YARRRML_PREDICATEOBJECT = 'predicateobjects'
-YARRRML_PREDICATEOBJECT_SHORTCUT = 'po'
+YARRRML_PREDICATEOBJECT_SHORTCUT = 'po' #eliminar
 
 YARRRML_PREDICATES = 'predicates'
-YARRRML_PREDICATE = 'predicate'
-YARRRML_PREDICATES_SHORTCUT = 'p'
 YARRRML_OBJECTS = 'objects'
-YARRRML_OBJECT = 'objects'
-YARRRML_OBJECT_SHORTCUT = 'o'
 YARRRML_VALUE = 'value'
-YARRRML_VALUE_SHORTCUT = 'v'
 YARRRML_DATATYPE = 'datatype'
 YARRRML_LANGUAGE = 'language'
 
@@ -152,7 +142,7 @@
 YARRRML_EQUAL = 'equal'
 YARRRML_JOIN = 'join'
 YARRRML_PARAMETERS = 'parameters' #used for conditions and functions
-YARRRML_PARAMETERS_SHORTCUT = 'pms'
+
 
 YARRRML_IRI = '~iri'
 YARRRML_LANG = '~lang'
@@ -166,22 +156,19 @@
 YARRRML_COMPRESSION = 'compression'
 
 YARRRML_FUNCTION = 'function'
-YARRRML_FUNCTION_SHORTCUT_A = 'fn'
-YARRRML_FUNCTION_SHORTCUT_B = 'f'
 
 YARRRML_PARAMETER = 'parameter'
-YARRRML_PARAMETER_SHORTCUT = 'p'
-
-YARRRML_MAPPING_KEYS = [YARRRML_MAPPINGS, YARRRML_MAPPING, YARRRRL_MAPPINGS_SHORTCUT]
-YARRRML_SUBJECT_KEYS = [YARRRML_SUBJECTS, YARRRML_SUBJECT, YARRRML_SUBJECTS_SHORTCUT]
-YARRRML_POM_KEYS = [YARRRML_PREDICATEOBJECT, YARRRML_PREDICATEOBJECT_SHORTCUT]
-YARRRML_GRAPH_KEYS = [YARRRML_GRAPHS, YARRRML_GRAPH, YARRRML_GRAPH_SHORTCUT]
-YARRRML_PREDICATE_KEYS = [YARRRML_PREDICATES, YARRRML_PREDICATE, YARRRML_PREDICATES_SHORTCUT]
-YARRRML_OBJECT_KEYS = [YARRRML_OBJECTS, YARRRML_OBJECT, YARRRML_OBJECT_SHORTCUT]
-YARRRML_FUNCTION_KEYS = [YARRRML_FUNCTION, YARRRML_FUNCTION_SHORTCUT_A, YARRRML_FUNCTION_SHORTCUT_B]
-YARRRML_PARAMETERS_KEYS = [YARRRML_PARAMETERS, YARRRML_PARAMETERS_SHORTCUT]
-YARRRML_PARAMETER_KEYS = [YARRRML_PARAMETER, YARRRML_PARAMETER_SHORTCUT]
-YARRRML_VALUE_KEYS = [YARRRML_VALUE, YARRRML_VALUE_SHORTCUT]
+
+YARRRML_MAPPING_KEYS = [YARRRML_MAPPINGS, YARRRML_MAPPING]
+YARRRML_SUBJECT_KEYS = [YARRRML_SUBJECTS]
+YARRRML_POM_KEYS = [YARRRML_PREDICATEOBJECT]
+YARRRML_GRAPH_KEYS = [YARRRML_GRAPHS]
+YARRRML_PREDICATE_KEYS = [YARRRML_PREDICATES]
+YARRRML_OBJECT_KEYS = [YARRRML_OBJECTS]
+YARRRML_FUNCTION_KEYS = [YARRRML_FUNCTION]
+YARRRML_PARAMETERS_KEYS = [YARRRML_PARAMETERS]
+YARRRML_PARAMETER_KEYS = [YARRRML_PARAMETER]
+YARRRML_VALUE_KEYS = [YARRRML_VALUE]
 
 
 YARRRML_OUTPUT_FORMAT = {
diff --git a/src/yatter/mapping.py b/src/yatter/mapping.py
index 7437cf8..d785d5b 100644
--- a/src/yatter/mapping.py
+++ b/src/yatter/mapping.py
@@ -107,8 +107,8 @@ def get_non_asserted_mappings(yarrrml_data, mapping_format):
                 for value in yarrrml_data.get(YARRRML_MAPPINGS).get(mapping).get(key):
                     if type(value) is dict:
                         star_data = [value]
-                        if YARRRML_OBJECT_SHORTCUT in value:
-                            star_data = value[YARRRML_OBJECT_SHORTCUT]
+                        if YARRRML_OBJECTS in value:
+                            star_data = value[YARRRML_OBJECTS]
                         for val in star_data:
                             if YARRRML_NON_ASSERTED in val:
                                 mappings[val[YARRRML_NON_ASSERTED]] = "non_asserted"