diff --git a/tools/importer-rest-api-specs/components/parser/dataworkarounds/workaround_batch_21291.go b/tools/importer-rest-api-specs/components/parser/dataworkarounds/workaround_batch_21291.go
index e0f15d5513f..7938b983d71 100644
--- a/tools/importer-rest-api-specs/components/parser/dataworkarounds/workaround_batch_21291.go
+++ b/tools/importer-rest-api-specs/components/parser/dataworkarounds/workaround_batch_21291.go
@@ -36,6 +36,7 @@ func (workaroundBatch21291) Process(apiDefinition models.AzureApiDefinition) (*m
 	if !ok {
 		return nil, fmt.Errorf("couldn't find the field StorageAccountId within model AutoStorageProperties")
 	}
+	field.Optional = true
 	field.Required = false
 
 	model.Fields["StorageAccountId"] = field