Build a Composer Flow

From the Composer Home page, click Create new flow > Create Flow from Scratch.
Your flow is named automatically.

To change the name automatically created for your new flow, click the pencil icon next to Untitled Flow and create a custom name using any of the characters A-Z, a-z, 0-9, space, hyphen ( - ), dot ( . ), and underscore ( _ ).

Click Save.

From the Composer Home page, click Create new Flow > Create Flow from Template.

Explore the template options and select the template you want to use.

Ensure you meet the prerequisites and if so, click Use this Template.

Configure your connections and information required by the flow.

Click Create flow.

From the sidebar, click Flows.

On the Flows page, click the name of the flow you want to clone.

Click Clone.

If you want to rename the flow, click the pencil icon next to Copy of original flow name and use any of the characters A-Z, a-z, 0-9, space, hyphen ( - ), dot ( . ), and underscore ( _ ).

Click Save.

Go to the Composer Flows tab. You can now view all flows within your org and view flow details, such as Flow Name, Status, and Last Modified Date.

From the Composer Flows tab, select a flow.

Click on the desired button, for example, click Delete to delete a flow or click Transfer ownership to change flow ownership (for error email notification flows only).

Create a new flow or open an existing flow.

In the <Flow Name> page, click Edit.

Locate the position in your flow where you want access the Variable step and click the plus button.

In the Next Step window, click Variable.
The Variable step appears.

Access the Variable step.

Select Action > Create Variable.

From the Variable section, click Add Variable.

In the Visual Editor, in the Label field, enter a unique name for the variable.

In the Data Type dropdown, select the data type you want to use for the variable. The following data types are supported: String, Number, Boolean, Date, DateTime.

Optionally, to add additional variables in the Visual Editor, click Add Variable. You can create multiple variables in each Variable step.

Click Apply.
The Create Variables window appears, displaying one or more new variables added to the flow.

Optionally, to change the variables, click Manage Variables to open the Visual Editor or Edit Schema to open the JSON Schema.

Specify the initial value for each variable. The default value is defined under each variable. If the field is empty, the value is set to the default value for that data type. You can manually enter a value, select any existing data pill (including variables) from your flow, or select the Custom Expression Editor to create a custom expression.

Access the Variable step.

Select Action > Create Variable.

In the Variable section, click Create Schema.

In the JSON Schema window, enter the properties for the variable to create.

{
"properties": {
"var-01": {
"type": "string",
"title": "My String"
},
"var-02": {
"type": "number",
"title": "My Number"
},
"var-03": {
"type": "boolean",
"title": "My Boolean"
},
"var-04": {
"type": "string",
"title": "My Date",
"format": "date"
},
"var-05": {
"type": "string",
"title": "My Datetime",
"format": "date-time"
}
}
}

Optionally, to add variables in the JSON Schema, enter them in the window.

Click Apply.
The Create Variables window appears, displaying one or more new variables added to the flow.

Optionally, to change the variables, click Manage Variables to open the Visual Editor or Edit Schema to open the JSON Schema.

Complete the initial value for each variable. The default value is defined under each variable. If the field is empty, the value is set to the default value for that data type. You can enter a value manually, select any existing data pill (including variables) from your flow, or you can select the Custom Expression Editor to create a custom expression.

Access the Variable step.

Select Action > Update Variable.

In the Variable section, click Select Variables.
The Select Variables window appears, displaying a list of all variables included in your flow before this step.

Select the checkbox next to one or more variables or click Select all <Number> variables to select all variables in the list.

Click Apply.
The Update Variable step appears.

Update the value for each variable. You can enter a value manually, select any existing data pill (including variables) from your flow, or you can select the Custom Expression Editor to create a custom expression. Note that if you are updating a variable with a value created from another variable, do not update them in the same step. Variables are not necessarily updated in the same order in which they are listed. To avoid unexpected behavior, update each variable in a separate steps.

From the Composer Flows tab, open a flow and click Edit.

In an action card, in a field that supports Pick from List or any string field, select Picklist Mapping from the menu.
The Picklist Mapping window appears.

In the Picklist Source section, in the Source field, select the value from the list that you want to map to the value in the Target field, and then click Next.

In the Global Picklist Selection section, create a new picklist or choose an existing picklist.

Click Create new picklist.

In the Global picklist name field, enter a unique name for the picklist.

Optionally, in the Description field, enter a description for the picklist. The following description is populated automatically based on your source and target systems:
This maps [Source Field Name] from [Source Connection Name] to [Target Field Name] from [Target Connection Name]

In the table, select the source fields and their target mappings.

Optionally, to add additional field mappings, click Add Row and if the additional field mapping is a:

Once you have added all applicable field mappings, click Create Picklist.

Click Apply.
The <Picklist Name> section appears, displaying a table of values and their mappings.

Select a picklist from the list. Note that all edits made to an existing picklist will impact all flows in which that picklist is currently used.

Optionally, in the <Picklist Name> section, to edit the values, click the pencil. Once you have edited the values, click Save Picklist and then click Apply.

Optionally, in the <Picklist Name> section, to delete the picklist, click the trashcan. Note that deleting a global picklist will affect all flows currently using that picklist.

Click Apply.
The action card appears.

Click the plus sign after the trigger or the last action in your flow.

Click Add Action.

Click If/Else Block to define the first branch.

Enter the requested criteria. You can specify that all conditions should be met (AND), any condition can be met (OR), or customize the order and grouping of your conditions.

Click + to add an action to that branch. Every branch must have an action, also called a step.

If you want to add another branch, click Add If and repeat the previous steps for every If/Else branch you create.

If you want to set criteria for how the flow executes if none of the criteria for the existing branches are met, click Add Else and repeat the previous steps for the final branch.

If you want to add additional conditions to your If/Else block, click Add condition.

After you add all the branches, click Save.

Create a new flow or open an existing flow.

Access the error handler in your flow.

In the Error Handler card, in the Watch section, click the plus sign and select the action to watch or drag the step to watch into the Watch section.
The selected action appears in the Watch section. If an error occurs, the flow moves to the actions selected in the On Error section.

To add additional actions to watch, repeat the previous step.