diff --git a/20240315_Fix-errors-in-own-production.sql b/20240315_Fix-errors-in-own-production.sql
new file mode 100644
index 0000000..f278090
--- /dev/null
+++ b/20240315_Fix-errors-in-own-production.sql
@@ -0,0 +1,2 @@
+UPDATE `documento_ventas_has_item`
+SET `es_produccion_propia` = (SUBSTRING(`id_item`,3,1) = "P")