You can download this HotFix from TIBCO Support Portal (https://support.tibco.com). You will need to provide your TIBCO Support Portal credentials. Once logged in you can download the hotfix by selecting the “Downloads” -> “Hotfixes” option. Then go to the AvailableDownloads/BusinessWorks/5.15.0/hotfix-07. 

IMPORTANT: Usage of this product requires activation. Please refer to the article at the following link for more information.

https://support.tibco.com/support-home/kbsearch/article?articleNumber=KB0138086

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Closed Issues in 5.15.0_HF-007 (This Release)

BW-21440
Licensing Activation support added through this release of TIBCO BusinessWorks 5.15.0 Hotfix 7.

BW-18067
Added asciiContent to the Send HTTP Request activity's Error Output to provide direct text access to error response bodies.

BW-19300
Resolved an issue where the BW engine entered a hung state after executing a very large number of iterations in 'While True' or 'Repeat-Until-True' groups.

BW-20368
Resolved intermittent deadlocks observed with the Notify activity when using MS SQL Server as the engine database.

BW-20369
Resolved a database blocking issue on MS SQL Server that caused applications using the Notify activity to hang.

BW-20512
Introduced an optional property to restore the Parse Data behavior, where consecutive double quotes are removed rather than replaced by a single quote.
This is a property based solution.
The name of the property is " com.tibco.bw.plugin.parsedata.convertDoubleQuotesToSpace ".
User need to set this property to " true " to enable the fix and to restroe the TIBCO BusinessWorks legacy behavior of Parse Data. 
The default value is " false ".
If this system property is set to true, the code reverts to the legacy behavior for handling double quotes in delimited strings.
Specifically, when consecutive double quotes appear, both are treated as delimiters and essentially removed, matching legacy behavior.

BW-21459
Resolved an issue where HTTP requests were not rejected as expected when the configured maxProcessors and acceptCount limits were exceeded.
This is property based solution.
If still more simultaneous requests are received over and above the bw.plugin.http.server.maxProcessors, Tomcat will accept new connections until the current number of connections reaches maxConnections. Once maxConnections + acceptCount has been reached, new connection requests will be refused.
To incorporate the new maxConnections API, a new property has been added bw.plugin.http.server.maxConnections.
The default value is 75 and can be configured.
A new property bw.plugin.http.server.maxQueueSize has been added. The default value is Integer.MAX_VALUE.
This property controls the maximum number of incoming connection requests that can be queued when all available connections are in use. Once the queue reaches this size, additional incoming requests will be refused until space becomes available in the queue.
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TIBCO ActiveMatrix BusinessWorks 5.15.0 Hotfix-07 is available