From dac5af6374034c8077c08e1bdfca48cc8087c187 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20H=C3=A4rter?= <sha@rother-oss.com>
Date: Tue, 30 Jan 2024 12:58:17 +0100
Subject: [PATCH] Issue #2889: Let ValueStructureToDB return a value structure
 also in undef case.

---
 Kernel/System/DynamicField/Driver/Base.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kernel/System/DynamicField/Driver/Base.pm b/Kernel/System/DynamicField/Driver/Base.pm
index 7cdcc0a931..04a626896f 100644
--- a/Kernel/System/DynamicField/Driver/Base.pm
+++ b/Kernel/System/DynamicField/Driver/Base.pm
@@ -372,7 +372,7 @@ Sets IndexValue and IndexSet for complex structures, if necessary.
 sub ValueStructureToDB {
     my ( $Self, %Param ) = @_;
 
-    return unless defined $Param{Value};
+    return [ { $Param{ValueKey} => undef } ] unless defined $Param{Value};
 
     if ( $Param{Set} ) {
         my @ReturnValue;