diff --git a/packages/strapi-plugin-content-type-builder/admin/src/containers/FormModal/utils/forms.js b/packages/strapi-plugin-content-type-builder/admin/src/containers/FormModal/utils/forms.js
index 06db89261c..a3a9d691e3 100644
--- a/packages/strapi-plugin-content-type-builder/admin/src/containers/FormModal/utils/forms.js
+++ b/packages/strapi-plugin-content-type-builder/admin/src/containers/FormModal/utils/forms.js
@@ -206,11 +206,16 @@ const forms = {
               .matches(NAME_REGEX, errorsTrads.regex)
               .unique(errorsTrads.unique, alreadyTakenAttributes)
               .required(errorsTrads.required),
-            targetAttribute: yup
-              .string()
-              .matches(NAME_REGEX, errorsTrads.regex)
-              .unique(errorsTrads.unique, targetAttributeAlreadyTakenValue)
-              .required(errorsTrads.required),
+            targetAttribute: yup.lazy(() => {
+              let schema = yup.string();
+
+              if (!['oneWay', 'manyWay'].includes(dataToValidate.nature)) {
+                schema = schema.matches(NAME_REGEX, errorsTrads.regex);
+              }
+              return schema
+                .unique(errorsTrads.unique, targetAttributeAlreadyTakenValue)
+                .required(errorsTrads.required);
+            }),
             target: yup.string().required(errorsTrads.required),
             nature: yup.string().required(),
             dominant: yup.boolean().nullable(),