diff --git a/onces/YASK/YASK#88964.sql b/onces/YASK/YASK#88964.sql
new file mode 100644
index 000000000..f6c6d9a16
--- /dev/null
+++ b/onces/YASK/YASK#88964.sql
@@ -0,0 +1,50 @@
+--
+-- $Id$
+--
+-- Opslag percentage bij de Maas Reversed Billing opdrachten van april invullen.
+
+DEFINE thisfile = 'YASK#88964.SQL'
+DEFINE dbuser   = '^YASK'
+
+SET ECHO ON
+SET DEFINE ON
+COLUMN fcltlogfile NEW_VALUE fcltlogfile NOPRINT;
+COLUMN fcltcusterr NEW_VALUE fcltcusterr NOPRINT;
+WHENEVER SQLERROR CONTINUE;
+SELECT adm.getscriptspoolfile('&thisfile') AS fcltlogfile FROM DUAL;
+SPOOL &fcltlogfile
+WHENEVER SQLERROR EXIT;
+SELECT adm.checkscriptcust('&dbuser') AS fcltcusterr FROM DUAL;
+WHENEVER SQLERROR CONTINUE;
+PROMPT &fcltcusterr
+SET DEFINE OFF
+
+------ payload begin ------
+
+-- aanpassen van het kenmerk opslag bij de Maas reversed billing opdrachten.
+DECLARE
+   CURSOR c IS
+      SELECT *
+        FROM mld_opdr
+       WHERE (   mld_opdr_omschrijving = 'Variabele kosten consumpties: APR-2025'
+              OR mld_opdr_omschrijving = 'Variabele kosten losse condimenten: APR-2025');
+BEGIN
+   FOR rec IN c
+   LOOP
+      VBXX.set_opslag_perc (rec.mld_opdr_key);
+      VBXX.set_verkoopprijs (rec.mld_opdr_key);
+   END LOOP;
+END;
+/
+
+------ payload end   ------
+
+SET DEFINE OFF
+BEGIN adm.systrackscriptId ('$Id$', 1); END;
+/
+
+COMMIT;
+SET ECHO OFF
+SPOOL OFF
+SET DEFINE ON
+PROMPT Logfile of this upgrade is: &fcltlogfile