Logs are accessed locally by clicking Debug, selecting Open Logs and accessing the Execution file for the desired date.

trace level to log any important data that you need to stand out from the rest of the log information.

The priority order of the log types is: Verbose < Trace < Information < Warning < Error < Critical < Off.

There is no limit to how many Catches you can use in a Try Catch activity.

By default, running a process in Studio will record trace level logs. To set logging to verbose level locally, access the Debug ribbon, enable the Log Activities option, and run the process in debug mode.

If “Information“ level is mentioned that means Information and above
If “Warn“ level is mentioned that means Warn and above
E.g
Warn means Warn and above
Warn
Error
Fatal

The Output panel enables you to display the output of the Log Message or Write Line activities, as well as the logs when the debug mode is activated.

The Global Exception Handler is a type of workflow designed to determine the project’s behavior when encountering an execution error. Only one Global Exception Handler can be set per automation project.

The Immediate panel is only visible during debugging, and it can be used for inspecting data available at a certain point during debugging. It can evaluate variables, arguments, or statements. To do so, simply type the variable or argument name in the Immediate window and press Enter.

When target application selector not available it will throw
SelectorNotFoundException

User-defined fields are defined in Studio by using the Add Log Fields activity and appear in all subsequent logs after the activity is generated, unless they are removed by the Remove Log Fields activity.

Retries the contained activities as long as the condition is not met or an error is thrown.

the user is already signed in and has the page opened.

The Retry Scope activity retries the contained activities as long as the condition is not met or an error is thrown.

To use the Create Test Bench option, go to the Activities panel search bar or use Ctrl + Alt + F keyboard shortcut. Type the name of an activity and right-click to open the context menu.

Trace level logs important for developing/debugging

It is used for testing activities, working with variables and debugging the process. All this is done in a test bench workflow, a temporary sequence that’s not part of the current project and that is discarded when closed.

Activities which are supported
ElementExists
ImageExists
Check App State
Check True
Check False
Text Exists

Hit count is 2 that means activity reaches second time

In the case of nested activities, the Global Exception Handler executes for each activity in the call stack. However, it does not execute for activities directly encapsulated in a Try Catch, unless they‘re contained in an activity.

You can choose not to log variable and argument values in Orchestrator and Studio so that you can protect sensitive information you might be dealing with during your automation.
To do this, you can select the Private property check box from the activities that use sensitive information.

As you can see the DT1 variable not instantiated it can be instantiated using new DataTable
Since Data Table DT1 has null value
it will catch
NullReferenceException

CTRL + L open log folder

The Global Exception Handler is a type of workflow designed to determine the project’s behavior when encountering an execution error. Only one Global Exception Handler can be set per automation project.

B: Consider this scenario: The button is loaded but the label not. We will click on the button, exit retry scope (because of continue on error property), but the text from label is not retrieved.
C: Not working properly for this scenario: The button is loaded but the label not fully loaded (element already exists but the text will appear after one second). This kind of thing happens on some websites and applications. Robot Get empty text and exit retry scope. Clicking should be also repeated multiple times until successful.
D: Not correct – when the label is loaded but the button not. We should repeat clicking multiple times until successful.

the folder path exists and save the PDF files.

Use info level to indicate that something happened, that the process entered a certain state, for purely informative purposes.

Notepad File Exist
so it will print
Try
Tried

Info level logs are used for descriptive information purposes

The following values can be assigned to the result argument:
Continue – The exception is re-thrown.
Ignore – The exception is ignored, and the execution continues from the next activity.
Retry – The activity which threw the exception is retried. Use the RetryCount method for errorInfo to count the number of times the activity is retried.
Abort – The execution stops after running the current Global Exception Handler.

The Global Exception Handler has two arguments, that should not be removed.
The first argument is errorInfo with the In direction and it stores information about the error that was thrown and the workflow that failed. The level of the error to be logged can be set in the Log Message activity.
The second argument, result has the Out direction and it is used for determining the next behavior of the process when it encounters an error

The Verbose level logs a message for both the activity start and end, plus the values of the variables and arguments that are used.

main types of logs generated by the UiPath Platform:
1. Studio logs.
2. Setup logs.
3. Orchestrator diagnostic logs.
4. Robot logs.

NumberofRetres property is blank
that takes default value as 3
already counter initialized to 1
it will increment 3 times
so output is
4

warn level for unexpected behavior that might occur, any information that might be useful to know but is not preventing the process from being complete.

Conditional breakpoints are breakpoints that depend on a set condition and/or a hit count. Conditional breakpoints can have the following states:
Enabled – 
Disabled – 

The Call Stack panel displays the next activity to be executed and its parent containers when the project is paused in debugging.
The panel is displayed during execution in debug mode and it gets populated after using Step Into, Break, Slow Step, or after the execution was paused because an error or a breakpoint was encountered.

In its off-the-shelf form, Workflow Analyzer comes with a wide set of rules. However, if your team‘s needs are not covered by the pre-defined rules, you have the option of building custom rules.
To build custom rules, you need the UiPath.Activities.Api package from the Official feed. Just like custom activities, custom rules are built in an IDE. They can be integrated in Studio at global or project level.

When configuring the Target Session for the Invoke Workflow Activity, the Isolated parameter has to be Enabled.

when we defined list variable we need to instantiate
new List(Of String)

SchedulingMode.OneTime – Execute one action and exit.

in the Team tab, select Clone Repository. The Clone a remote GIT repository. window is displayed.

Activity Project settings may be configured for two scenarios: Production and Debug. In this way, for the same activities in the project, specific settings are applied in production, when the project is run, while a different set of settings are enforced during debugging.

Please Note in the Invoke Code Edit Arguments the direction of the Argument is “Out“ so only “UiPath“ text will be returned from Invoke Code
here you are not passing any value in …but only getting the value…so input = input which is empty + UiPath …so output is UiPath

Since this is a static method, you would need to configure the Target Type property.

Here are some situations when we should use the Invoke Method activity:
When we have a class library/DLL in vb.net or c# and want to call that method.
When we want to use a method which does not generate an output (for example, Reverse) and therefore cannot be used in an Assign activity.
When we want to use a method which generates several pieces of output (for example, TryParse which generates a Boolean and an Int32). Several values cannot be assigned using an Assign activity.

Enhanced collaboration
Team members can work freely on any file at any time and merge the changes into a common version at the right time
Storing versions
Only the current version is stored on the disk, all the others are in the system
Restoring previous versions
Restore older versions of the file at any time.
Tracking different project versions
New versions are usually saved with change descriptions. Versions of the same file can also be compared

UiPath Automation Ops is a centralized, web-based platform that enables a simple and convenient way to manage and implement governance policies based on user profiles, and to manage the feeds available in the organization. Automation Ops is an admin feature available in UiPath Automation Cloud.

Libraries are saved as .nupkg files

The files contain the following information about each enabled rule:
RuleId – The rule ID.
RuleName – The name of the rule.
Parameters – The customizable parameters in the rule, if applicable.
Severity – The rule action, if the rule is violated.
ErrorsDescription – A list of error messages generated by the rule, if applicable.

ST – reveals that the rule is built into Studio.
NMG – shows that the rule is part of the Naming Rules category. Rules part of Project Anatomy Rules category have the ANA abbreviation, those part of Design Best Practices the DBP, and so on.
001 – is the rule number.

File-based Governance: Create a JSON policy file and deploy the file locally, externally, or through Orchestrator.

Enforce Analyzer before Run – Whenever running/debugging a file or project is initiated, the Workflow Analyzer checks all the rules with the Error action and execution is allowed only if no errors are found.
Enforce Analyzer before Publish – Whenever publishing is initiated, the Workflow Analyzer checks all enabled rules regardless of their action and publishing is allowed only if there are no rule violations with the action Error.

Invoke Method Used in the situation When we have a class library/DLL in vb.net or c# and want to call that method.

When we want to simplify data manipulation procedures in our workflow.
When we want to reduce the number of Assign and Invoke Method activities, by replacing several with a single Invoke Code activity.
When we need to write custom code for some steps in the process.

To save your Activity Project Settings configuration and apply it to other future automation projects use the Save as Template functionality in Studio.