# 9.20 Maintenance Release 4

Kone Sync Service – Throttling resilienceEnhancements in this version are as follows

<table><thead><tr><th width="115">Tech Ref</th><th width="437">Description</th><th width="152">Component</th></tr></thead><tbody><tr><td>96516</td><td>REST API Query Throttling</td><td>Server</td></tr><tr><td>150695</td><td>Kone Sync Service – Throttling resilience</td><td>Server</td></tr><tr><td>156096</td><td>Occupancy Data Disclosure Policy Change </td><td>Server</td></tr><tr><td>156483</td><td>C6000 Linux Kernel upgrade to 6.1.136</td><td>Controller</td></tr><tr><td>157369</td><td>Performance counter added for the number of concurrent REST API calls</td><td>Server</td></tr><tr><td>159601</td><td>BACnet v9.20.46 has been released to address the compatibility issue with the controller software</td><td>Customisations/Controller</td></tr><tr><td>160973</td><td>SIP Service updated to SIP v9.10.12</td><td>Integrations/<br>Media</td></tr></tbody></table>

Bug fixes in this version are as follows.

<table><thead><tr><th width="114">Tech Ref</th><th width="447">Description</th><th width="139">Fixed In</th></tr></thead><tbody><tr><td>142667</td><td>C7000 SD POE LLDP negotiation generate lldpcli failure log events in the controller Application log.</td><td>Controller</td></tr><tr><td>142983</td><td>T Series readers misreporting wallet incompatible</td><td>Server/<br>Controller</td></tr><tr><td>153427</td><td>Morpho readers incorrect values for OSDP</td><td>Server</td></tr><tr><td>154326</td><td>Memory Leak issue - Fix for Excessive RAM Usage in REST-Connected Server</td><td>Server</td></tr><tr><td>154660</td><td>Assigning same floor as primary and secondary home floor should not be allowed</td><td>Server/Client</td></tr><tr><td>155919</td><td>Command Centre Client is crashing when opened on the server Windows Server 2016 directly.</td><td>Client</td></tr><tr><td>156452</td><td>PIV card import issue</td><td>Server</td></tr><tr><td>157443</td><td>Improve Reliability of Cardholder Operations Under Load</td><td>Server</td></tr><tr><td>157662</td><td>Fix for Multiserver Merge Issues Affecting Cardholder and PDF Data</td><td>Server</td></tr><tr><td>157736</td><td>Attempting to apply the site facility code to the biometric card type triggers a "conflict occurred in database" error"</td><td>Server</td></tr><tr><td>157737</td><td>Report stuck in loading when card type filter is used</td><td>Server</td></tr><tr><td>157776</td><td>Performance Degradation from action plans set to “Not an Event,” establishing a new database connection.</td><td>Server</td></tr><tr><td>157949</td><td>Performance degradation addressed due to concurrent calls</td><td>Server</td></tr><tr><td>157957</td><td>Time report overview doesn't group the overview data, like the number of cardholder</td><td>Server</td></tr><tr><td>158369</td><td>Z10 Tenson - improper locking logic during configuration updates, causing the system to hang</td><td>Server</td></tr><tr><td>158412</td><td>Performance degradation addressed - Improve multi-item-subscription efficiency and reduce thread count</td><td>Server</td></tr><tr><td>158492</td><td>"lldp Negotiation in progress" never goes away</td><td>Controller</td></tr><tr><td>Tech Ref</td><td>Description</td><td>Fixed In</td></tr><tr><td>158577</td><td>OPCUA session deadlock is causing Gallagher services to crash</td><td>Server</td></tr><tr><td>158772</td><td>CC Service Restart Loop Triggered by Encrypted REST Client Keys in Restored Template – Fixed in Template Utilities</td><td>Server</td></tr><tr><td>159283</td><td>Card Type Setup – Card Fixed duration increased to 99 years</td><td>Server</td></tr><tr><td>159373</td><td>Cardholder Viewer not showing all PDF fields when creating a new cardholder in a 3 Server multiserver environment</td><td>Server/<br>Multiserver</td></tr><tr><td>159898</td><td>Performance degradation addressed, Multiserver registrations</td><td>Server</td></tr><tr><td>159947</td><td>C6000 and C7000: Kernel version and SDK versions not displaying correctly</td><td>Controller</td></tr><tr><td>160304</td><td>Email PDF sync failure across Multiserver</td><td>Server/<br>Multiserver</td></tr><tr><td>160749</td><td>Issues upgrading controller software when Alcolizer customisation is installed</td><td>Controller</td></tr><tr><td>160820</td><td>Multiserver change sets outstanding after deleting a Division</td><td>Server/<br>Multiserver </td></tr><tr><td>160997</td><td>EDI is not running as scheduled </td><td>Server</td></tr><tr><td>161187</td><td>Setting a PDF as required, isn't refreshing the cache for cardholders which have a null value</td><td>Server</td></tr><tr><td>163049</td><td>Operator Privilege Enforcement Update to address issues found in the previous MR</td><td>Server</td></tr></tbody></table>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.security.gallagher.com/command-centre/command-centre-releases/release-history/supported-gallagher-command-centre-releases/command-centre-9.20-releases/9.20-maintenance-release-4.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.