diff --git a/user/profile/field/text/field.class.php b/user/profile/field/text/field.class.php
index b88d8735b75..8d85f2b129c 100644
--- a/user/profile/field/text/field.class.php
+++ b/user/profile/field/text/field.class.php
@@ -70,6 +70,33 @@ class profile_field_text extends profile_field_base {
         $mform->setType($this->inputname, PARAM_TEXT);
     }
 
+    /**
+     * Process the data before it gets saved in database
+     *
+     * @param string|null $data
+     * @param stdClass $datarecord
+     * @return string|null
+     */
+    public function edit_save_data_preprocess($data, $datarecord) {
+        if ($data === null) {
+            return null;
+        }
+        return core_text::substr($data, 0, $this->field->param2);
+    }
+
+    /**
+     * Convert external data (csv file) from value to key for processing later by edit_save_data_preprocess
+     *
+     * @param string $data
+     * @return string|null
+     */
+    public function convert_external_data($data) {
+        if (core_text::strlen($data) > $this->field->param2) {
+            return null;
+        }
+        return $data;
+    }
+
     /**
      * Return the field type and null properties.
      * This will be used for validating the data submitted by a user.
diff --git a/user/profile/field/text/tests/field_class_test.php b/user/profile/field/text/tests/field_class_test.php
index bdde7f88d65..e0936f845ac 100644
--- a/user/profile/field/text/tests/field_class_test.php
+++ b/user/profile/field/text/tests/field_class_test.php
@@ -69,5 +69,49 @@ class field_class_test extends \advanced_testcase {
                 'emoticons_filter' => ['No emoticons filter :-(', 'No emoticons filter :-(']
         ];
     }
+
+    /**
+     * Test preprocess data validation
+     */
+    public function test_edit_save_data_preprocess(): void {
+        $this->resetAfterTest();
+
+        $fielddata = $this->getDataGenerator()->create_custom_profile_field([
+            'datatype' => 'text',
+            'name' => 'Test',
+            'shortname' => 'test',
+            'param2' => 5, // Max length.
+        ]);
+        $field = new profile_field_text(0, 0, $fielddata);
+
+        $value = $field->edit_save_data_preprocess('ABCDE', new \stdClass());
+        $this->assertEquals('ABCDE', $value);
+
+        // Exceed max length.
+        $value = $field->edit_save_data_preprocess('ABCDEF', new \stdClass());
+        $this->assertEquals('ABCDE', $value);
+    }
+
+    /**
+     * Test external data validation
+     */
+    public function test_convert_external_data(): void {
+        $this->resetAfterTest();
+
+        $fielddata = $this->getDataGenerator()->create_custom_profile_field([
+            'datatype' => 'text',
+            'name' => 'Test',
+            'shortname' => 'test',
+            'param2' => 5, // Max length.
+        ]);
+        $field = new profile_field_text(0, 0, $fielddata);
+
+        $value = $field->convert_external_data('ABCDE');
+        $this->assertEquals('ABCDE', $value);
+
+        // Exceed max length.
+        $value = $field->convert_external_data('ABCDEF');
+        $this->assertNull($value);
+    }
 }