Bug ID 1491121: Patching a new application service's parameters overwrites entire application service parameters

Last Modified: Oct 19, 2025

Affected Product(s):
BIG_IP_NEXT(CM) BIG-IQ(all modules)

Known Affected Versions:
20.1.0, 20.1.1

Opened: Jan 16, 2024

Severity: 3-Major

Symptoms

When sending a PATCH API request to append an application service's parameters, all parameter are completely replaced with changes, rather than partially changing the parameters according to the PATCH request.

Impact

If you send incomplete application service parameters, the changes will completely replace the existing parameters, and only partial parameters will be saved. This will lead to failed application service deployment as the parameters are incomplete.

Conditions

Use a PATCH API request to partially update application service parameters. Deploy changes.

Workaround

When using the API request to change application service parameters, include in the body of the request full application service parameters, and not just partial changes.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips