diff --git a/docs/4-language-usage/8-patterns/5-use-dbms-application-info-package-to-follow-progress-of-a-process/g-8420.md b/docs/4-language-usage/8-patterns/5-use-dbms-application-info-package-to-follow-progress-of-a-process/g-8510.md
similarity index 94%
rename from docs/4-language-usage/8-patterns/5-use-dbms-application-info-package-to-follow-progress-of-a-process/g-8420.md
rename to docs/4-language-usage/8-patterns/5-use-dbms-application-info-package-to-follow-progress-of-a-process/g-8510.md
index 218c6b41..b7e94e51 100644
--- a/docs/4-language-usage/8-patterns/5-use-dbms-application-info-package-to-follow-progress-of-a-process/g-8420.md
+++ b/docs/4-language-usage/8-patterns/5-use-dbms-application-info-package-to-follow-progress-of-a-process/g-8510.md
@@ -1,4 +1,4 @@
-# G-8420: Always use dbms_application_info to track program process transiently.
+# G-8510: Always use dbms_application_info to track program process transiently.
 
 !!! tip "Minor"
     Efficiency, Reliability
diff --git a/docs/9-appendix/appendix.md b/docs/9-appendix/appendix.md
index aded20e4..86c9603e 100644
--- a/docs/9-appendix/appendix.md
+++ b/docs/9-appendix/appendix.md
@@ -95,4 +95,4 @@ n/a | 8120 | Never check existence of a row to decide whether to create it or no
 79 | 8210 | Always use synonyms when accessing objects of another application schema. | Major | ✘ |  | ✘ |  |  |  |  | 
 n/a | 8310 | Always validate input parameter size by assigning the parameter to a size limited variable in the declaration section of program unit. | Minor |  |  | ✘ |  | ✘ | ✘ |  | ✘
 n/a | 8410 | Always use application locks to ensure a program unit only running once at a given time. | Minor |  | ✘ |  |  | ✘ |  |  | 
-n/a | 8420 | Always use dbms_application_info to track program process transiently | Minor |  | ✘ |  |  | ✘ |  |  | 
+n/a | 8510 | Always use dbms_application_info to track program process transiently | Minor |  | ✘ |  |  | ✘ |  |  | 
diff --git a/docs/stylesheets/extra.css b/docs/stylesheets/extra.css
index c4b027c4..709dddcd 100644
--- a/docs/stylesheets/extra.css
+++ b/docs/stylesheets/extra.css
@@ -89,8 +89,7 @@
         page-break-before: always;
     }
 
-    [id*="10-"], 
-    [id^="g-8420"] {
+    [id*="10-"] {
         page-break-before: avoid;
     }
 }