Group by Playbook Instance | User Docs

Last Updated: October 26, 2026

When configured with "groupBy": "Playbook Instance", the Merge task consolidates all arriving upstream execution lineages into a single merged result. Each completed upstream lineage reaching the Merge task contributes one execution-lineage object.

Unlike grouping by "Path" and grouping by "Task Instance", a Merge task that groups by "Playbook Instance" will only have one execution instance with a Raw Data tab containing the merge result array.

Merge Condition Format

To enable grouping by playbook instance, configure the Merge task's condition as:

JSON

{
  "groupBy": "Playbook Instance"
}

Core Concepts

The examples below demonstrate how variations in task structure, path specification, and output availability influence merge.

Example 1 - Merging Parallel Lineages

objective – Learn that groupBy: "Playbook Instance" aggregates all upstream lineages converging at the Merge task into a single result array.

Tip: you can also generate this playbook with AI. See Generating with AI.

Build the following playbook:
Use the default merge condition:
JSON
```
{
  "groupBy": "Playbook Instance"
}
```
Test run the playbook.
Click on the status icon within the Merge task.

Observe the execution results for the Merge task in the Raw Data tab.

Merge result

JSON

[
  {
    "DataSource": { ... },
    "A1": { ... },
    "A2": { ... }
  },
  {
    "DataSource": { ... },
    "B1": { ... },
    "B2": { ... }
  },
  {
    "DataSource": { ... },
    "C1": { ... },
    "C2": { ... }
  }
]

TAKEAWAYS

Each parallel execution lineage that converges at the Merge task contributes a separate object to the result array in the Merge task's Raw Data tab.
Among multiple executions of the Merge task, only one contains this consolidated result.

Example 2 - Merging Parallel Lineages Involving Unwind Tasks

objective – Understand how both non-repeating task flows and Unwind-driven executions contribute individual execution-lineage objects to the result of a Merge task.

Build the following playbook:

Input the following JSON data for the Unwind B task:

JSON

[
  {
    "demoKey1": "value1"
  },
  {
    "demoKey2": "value2"
  }
]

Input the following JSON data for the Unwind C task:

JSON

[
  { "demoKey3": "value3" },
  { "demoKey4": "value4" },
  { "demoKey5": "value5" },
  { "demoKey6": "value6" },
  { "demoKey7": "value7" },
  { "demoKey8": "value8" },
  { "demoKey9": "value9" },
  { "demoKey10": "value10" },
  { "demoKey11": "value11" },
  { "demoKey12": "value12" }
]

Use the default merge condition:
JSON
```
{
    "groupBy": "Playbook Instance"
}
```
Test run the playbook.
Click on the status icon within the Merge task.

Observe the execution results for the Merge task in the Raw Data tab.
Merge result

JSON

[
  {
    "DataSource": { ... },
    "A1": { ... },
    "A2": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind B": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind B": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  },
  {
    "DataSource": { ... },
    "Unwind C": { ... },
    "BC": { ... }
  }
]

TAKEAWAY

Each completed upstream lineage reaching the Merge task—whether originating from a linear sequence of distinct task nodes or from repeated executions triggered by Unwind-based element deconstruction—results in a distinct execution-lineage object in the merge result.

Example 3 - Merge Tasks in Sequential Levels

objective – Demonstrate how Merge tasks behave when used in sequential levels.

Build the following playbook:
Configure the delay tasks appropriately.
Use the default merge condition for all Merge tasks:
JSON
```
{
  "groupBy": "Playbook Instance"
}
```
Test run the playbook.

Check the merge results.

merge ABC result

JSON

[
  {
    "DataSource": { ... },
    "B": { ... }
  },
  {
    "DataSource": { ... },
    "C": { ... }
  },
  {
    "DataSource": { ... },
    "A": { ... },
    "Delay 5 Seconds": { ... }
  }
]

merge DEF result

JSON

[
  {
    "DataSource": { ... },
    "D": { ... },
    "Delay 6 Seconds": { ... }
  },
  {
    "DataSource": { ... },
    "F": { ... },
    "Delay 7 Seconds": { ... }
  },
  {
    "DataSource": { ... },
    "E": { ... },
    "Delay 8 Seconds": { ... }
  }
]

merge ABCDEF result

JSON

[
  {
    "DataSource": { ... },
    "A": { ... },
    "Delay 5 Seconds": { ... },
    "Merge ABC": {
      ...
      "rawData": [
        {
          "DataSource": { ... },
          "B": { ... }
        },
        {
          "DataSource": { ... },
          "C": { ... }
        },
        {
          "DataSource": { ... },
          "A": { ... },
          "Delay 5 Seconds": { ... }
        }
      ],
      ...
    }
  },
  {
    "DataSource": { ... },
    "E": { ... },
    "Delay 8 Seconds": { ... },
    "Merge DEF": {
      ...
      "rawData": [
        {
          "DataSource": { ... },
          "D": { ... },
          "Delay 6 Seconds": { ... }
        },
        {
          "DataSource": { ... },
          "F": { ... },
          "Delay 7 Seconds": { ... }
        },
        {
          "DataSource": { ... },
          "E": { ... },
          "Delay 8 Seconds": { ... }
        }
      ],
      ...
    }
  }
]

Re-run the playbook with the following Data Formatter tasks inserted:
- Format ABC between Merge ABC and Merge ABCDEF
- Format DEF 1 between Merge DEF and Merge ABCDEF
- Format DEF 2 between Merge DEF and Merge ABCDEF

Check the merge results of the Merge ABCDEF task.
merge ABCDEF result

JSON

[
  {
    "DataSource": { ... },
    "A": { ... },
    "Delay 5 Seconds": { ... },
    "Merge ABC": {
	  ...
      "rawData": [
        {
          "DataSource": { ... },
          "B": { ... }
        },
        {
          "DataSource": { ... },
          "C": { ... }
        },
        {
          "DataSource": { ... },
          "A": { ... },
          "Delay 5 Seconds": { ... }
        }
      ],
      ...
    },
    "Format ABC": { ... }
  },
  {
    "DataSource": { ... },
    "E": { ... },
    "Delay 8 Seconds": { ... },
    "Merge DEF": {
	  ...
      "rawData": [
        {
          "DataSource": { ... },
          "D": { ... },
          "Delay 6 Seconds": { ... }
        },
        {
          "DataSource": { ... },
          "F": { ... },
          "Delay 7 Seconds": { ... }
        },
        {
          "DataSource": { ... },
          "E": { ... },
          "Delay 8 Seconds": { ... }
        }
      ],
      ...
    },
    "Format DEF 1": { ... }
  },
  {
    "DataSource": { ... },
    "E": { ... },
    "Delay 8 Seconds": { ... },
    "Merge DEF": {
	  ...
      "rawData": [
        {
          "DataSource": { ... },
          "D": { ... },
          "Delay 6 Seconds": { ... }
        },
        {
          "DataSource": { ... },
          "F": { ... },
          "Delay 7 Seconds": { ... }
        },
        {
          "DataSource": { ... },
          "E": { ... },
          "Delay 8 Seconds": { ... }
        }
      ],
      ...
    },
    "Format DEF 2": { ... }
  }
]

TAKEAWAYS

In subsequent merges (e.g., Merge ABCDEF), only the last-arriving lineage from each prior merge is included as a top-level object in the merged result.
The number of execution lineage objects in any merge result is equal to the number of inbound connectors feeding that Merge task.

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