---
title: Organization Master Data Block
description: "*This block provides a unified master list of organizations. Use this block to apply field-level filtering and standard transformations to organization records.* The Organization Master (OrganizationMaster) Data Block in Assette is a Python-based Transform block designed to retrieve and consolidate…"
url: "https://learn.assette.com/docs/organization-master-data-block/"
updated: "2025-05-12"
category: Developers / Data Blocks / Data Blocks by Category / System Data Blocks
---

# Organization Master Data Block

*This block provides a unified master list of organizations. Use this block to apply field-level filtering and standard transformations to organization records.*

The Organization Master (OrganizationMaster) Data Block in Assette is a Python-based Transform block designed to retrieve and consolidate organization data from both internal and external systems. It enables standardized output by transforming specific fields (e.g., `AccountNumber` to `Code`, `Website` to `Domain`) and supports field-based filtering using optional parameters. This block is useful for centralized, reusable access to organization-level reference data.

## General Info

| Field | Value |
| --- | --- |
| Name | OrganizationMaster |
| Block Category | Transform |
| Block Type | Python |
| Output Type | Data Table |
| Public Block | True |
| Editable | True |

## Dependecies

OrganizationReadLocal can be replaced with OrganizationReadSalesforce, depending on the intended data source.

| Data Block | Description |
| --- | --- |
| ast_fn_table_helpers | Client Python Library used to support data manipulation and formatting operations across other Data Blocks [[Link](https://learn.assette.com/docs/assette-functions-table-helper-data-block/)] |
| OrganizationReadLocal | Pulls organization reference data directly from Assette's internal database. [[Link](https://learn.assette.com/docs/organization-read-local-data-block/)] |

## Definition

```
#Organization master block to get data.
filterparams = {}
if len(params) > 0:
    for key, value in params.items():
        if value:
            filterparams[key] = value

#Use this dependent block to Read organization from local database and Sales force. Dependent blcok has to be changed to switch..
Output = read("OrganizationRead",{})

#Transform results set.
Output = ast_fn_table_helpers.transform_dictionary_list (Output.get("data") or [],{"AccountNumber":"Code","Website":"Domain"})
if len(filterparams)>0:
    #Filter results set.
    Output = ast_fn_table_helpers.FilterDictionaryByFields(Output,filterparams)
#Transform results set.
response["data"] = ast_fn_table_helpers.transform_dictionary_list (Output,{"AccountNumber":"Code","Website":"Domain"})
```

## Columns

| Column Name | Required | Description |
| --- | --- | --- |
| Code | Yes | Mapped from `AccountNumber`, acts as a unique organization identifier |
| Domain | No | Mapped from `Website`, shows the organization’s web domain |

## Example Request

```
{
    "Code": "Apple",
    "Name": "Apple",
    "Domain": "apple.com",
    "Phone": ""
}
```

## Example Response

*The following code shows an example response using the default values of the Data Block. The response may be shortened for brevity.*

```
{
    "data": [
        {
            "Code": "Apple",
            "Name": "Apple",
            "Domain": "apple.com",
            "Phone": null
        }
    ],
    "errors": [],
    "success": true,
    "logs": [],
    "sources": []
}
```