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We can create custom Agentforce Agent actions using the Apex Rest Resource apex classes. This helps in reusing the existing Apex Development for the Agentforce Agent implementation.
Blog Post:
https://www.infallibletechie.com/2025/03/salesforce-custom-agent-actions-using-apex-rest.html
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0:07
hello everyone in this video we are
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going to see how to
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create custom agent actions using your
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existing
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Salesforce rest resources in
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Apex if you are using at rest resource
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annotation in your city for s for your
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Apex classes it means that using Apex
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rest API we will be able to invoke these
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Apex classes and methods from your third
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party
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applications if you wanted to reuse the
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same class and method in agent
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force then we can make use of agent
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force Apex rest resources let's see how
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to do
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this we have to make use of Salesforce
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agent force for developers if you go to
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your Salesforce or and if you see agent
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force for developers by default it will
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be enabled if you have any legal
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requirement to disable it you can
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disable it if this is toggled on then it
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will disable the agent force for
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developers in this or so if this is
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toggled on and
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disabled um then you will not be able to
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make use
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of this custom agent actions using Apex
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rest so make sure this particular
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disabled agent force for developers in
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this orc
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is toggled off so it is enabled so this
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is
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done then we have to install agent force
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for developer V code extension in your
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vs code editor once you install you will
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see the agent force icon here using
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which we can make use of the agent force
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assistant in order to get the vs code
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extension link please go to this blog
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post I have given step bystep
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instructions using which you should be
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able to install Salesforce agent force
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for developers extension in your vs code
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editor and then you should be able to
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use
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it next step is you have to run this
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code or you have to run this command you
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can go to your vs code terminal and you
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can run or you can open your sfdx uh um
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command line interface and then you can
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run it if you run it in the
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terminal you will see files deleted and
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and it will recreate the files the
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advantage of running this command is it
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will help in generating open API V3
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specification in a yaml editor in the vs
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code
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ID if you have worked in moft or any
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other Technologies which makes use of yl
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yaml we say it as yaml so you you will
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be familiar with it um it makes use of
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uh
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indentation uh in the code very similar
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to python uh so you if you're are not
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familiar you can uh search in uh um moft
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help document and then you should be
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able to understand more information
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about yl once this code is uh sorry once
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this command is successfully
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executed you can go to sfdx iph project.
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Json it
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will change or add the source Behavior
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options as decompose external Service
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registration beta
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so if you go here if you go to sfdx
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project. Json it changed it or it added
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it so I run this
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uh command in my vs Cod terminal so it
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got
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updated so step three is also done next
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step is we have to execute the following
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command you can copy this
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command and then uh now if you do
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control shift
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B here you should be able
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to uh search for
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it so this will refresh all the s object
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references uh in
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Salesforce so once this is also
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done you have to select all s object
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options when you run this
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command now um vs code is set up uh all
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the objects reference are refreshed
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because we run this particular
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command so this is also
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done next you have you will already have
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an existing Apex class or if you wanted
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to create and use it for multiple
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purpose also you can create make sure
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you your class have with sharing keyword
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or without sharing or inherited
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keyword uh any one of those uh keywords
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should be there in your
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class and U it should have any one of
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these annotated method it can be get
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post put patch or delete so make sure it
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has this is a sample
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class uh this is not a working code but
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I got this from sales force reference
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document so you can also make use of
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this just to play around so once this
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code is uh created in your uh vs code uh
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editor you can deploy it or you can keep
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it local as of now next you have to run
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this uh
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command uh you can right click your Apex
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class and then you can run this
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command if you prefer to use count
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control Shifty then you can also make
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use of that so here you can
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do command shift B and then you can
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paste that and then you should be able
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to run it or you should be able to yeah
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I cannot do it from here but I should be
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able to do it from the Apex class so you
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can right click the Apex class and then
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you should be run it or you should open
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the Apex class you have to do command
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shift p and then you should be able to
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run
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this so this will
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create external Service registration iph
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meta.xml file so this is the file which
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is automatically created from this Apex
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class uh
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so here I am making use of a simple HTTP
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post method annotation in this um using
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this annotation I am having a method
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called import case the import case
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accepts subject and description it is
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creating a case record once the case is
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successfully created it will say case
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created for you if there are any DML
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exceptions it will return seeing that um
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e E.G message will return the failure
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message for the insert uh case operation
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and then it will return the failure
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message back to the agent force uh
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action so this is the class I have made
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use of it when I ran this create open
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API document from this class beta it
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generated this file automatically but
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when I tried to use it it didn't work
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there was an issue so you also make sure
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you are checking this in the
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responses in the content by default it
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was using
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application uh SL Json but if you look
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at the return type of my Apex um method
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it is rning string so I changed the
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content type from application iph Json
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to text this one was automatically
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generated by Salesforce so this worked
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so instead of application uh SL Json
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when I changed it to text I deployed
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this to the arc you have you have to
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deploy the class also if you haven't
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deployed so deploy both Apex class
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metadata and external Service
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registration I
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meta.xml metadata type once it is
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deployed you can go
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to API
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catalog and then you should be able to
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verify it go to apa catalog in
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Salesforce setup go to Apex beta you
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should see your Apex class
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and you should also see the
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method next I
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created agent action using the Apex
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class so this is the um agent action I
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created you can also go to agent actions
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you can click
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new so here you should be able to select
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it since I have already created I'm not
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going to duplicate
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it so this is the agent action which I
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created and
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uh this is my agen for service agent I
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created a topic called create case this
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is just
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for uh demo purpose so I didn't
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configure it with the proper
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classification scope and instruction
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and I imported the agent
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action by making use of add from asset
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Library if you haven't created the agent
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action you can also create it from here
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so this is the agent action I'm making
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use of it from the Apex rest
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resource now let's test it I wanted to
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directly test it so I'm going to say
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create the case and this this is the
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subject and
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description before before we execute as
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of now there are no cases in my
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arc one more important thing go to
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settings find this
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user for this user you have to give
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access to this Apex class else it won't
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run that is also very important
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step so it created the cas successfully
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for me
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let's verify that yeah subject is test
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it is created by the Einstein service
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agent
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user and
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uh description is demo subject is
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test so I was
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easily able to reuse my existing Apex
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rest resoures in Salesforce agent force
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action and I was able bble to reference
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it in my topic and then I was able to
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execute
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it please check the video description in
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the video description I have given my
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blog post from the blog post you should
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be able to get the commands sample Apex
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code um for your reference and then you
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should be able to play
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around I hope it was helpful
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thank you for watching
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