---
title: "Activity Links"
slug: "safran-project-integration-api-activity-links"
updated: 2026-01-30T07:41:17Z
published: 2026-01-30T07:41:17Z
canonical: "docs.safran.com/safran-project-integration-api-activity-links"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.safran.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Activity Links

## Activity Links

### /v1/activity_links/

List Of Relationships for Activities

### Example for calling:

http://server/v1/activity_links - retrieves all activity_links

http://server/v1/activity_links?network_id=1 – retrieves activity_links for activities in network having id = 1

### Allowed Methods:

[GET]

API Controller: **activity_links**

### Description:

1. Lists all activity links for the supplied network_id.
2. Activity links referring to non-existing activities will not be included in the result set from the API.
3. Activity links referring to non-existing calendars will have no calendar in the result set from the API. Activity link will be listed but without calendar.

**Parameters:**

| **Name** | **Type** | **Description** | **Notes** |
| --- | --- | --- | --- |
| network_id | integer | Network Id | Returns constraints related to given network id.If "SafranWebAPIOwnerVerificationDuringApiCalls" in [Application Settings](/v1/docs/application-settings) is in use, this is mandatory |
| owner | string | Networks owner | [Optional] Relates to "SafranWebAPIOwnerVerificationDuringApiCalls" in [Application Settings](/v1/docs/application-settings) |

### Response Fields:

| **Name** | **Type** | **Description** | **Notes** |
| --- | --- | --- | --- |
| prev_id | integer | Id for preceding activity |  |
| next_id | integer | Id for succeeding activity |  |
| network_id | integer | Network Id |  |
| link_type | integer | Link type (possible values: FS, SF, FF, SS) | SS = 1 SF = 2 FS = 3 FF = 4 |
| lag_time | integer | Lag time on activity link |  |
| calendar | integer | Activity link calendar |  |
| duration_format | string | Formating unit for the lag_time field | "weeks" "days" "hours" "minutes" "percent" "undefined" - meaning database value is null or 0 |
| disabled | boolean | A field both in the Predecessors and Successors area of Logic Navigator and Links Panels, which allows to disable Links so they do not have an effect in the Activities linked | Default value is False |

**Show JSON Response**

    
    

json result

```
[
  {
    "prev_id": 1,
    "next_id": 10,
    "network_id": 1,
    "link_type": 3,
    "prev_name": "00010",
    "next_name": "CSNew001"
    
    },
  {
    "prev_id": 10,
    "next_id": 12,
    "network_id": 1,
    "link_type": 4,
    "prev_name": "CSNew001",
    "next_name": "CSNew002"
    
    },
  {
    "prev_id": 12,
    "next_id": 14,
    "network_id": 1,
    "link_type": 1,
    "prev_name": "CSNew002",
    "next_name": "CSNew004"
    
    },
  {
    "prev_id": 15,
    "next_id": 14,
    "network_id": 1,
    "link_type": 4,
    "lag_time": 3,
    "calendar": 1,
    "prev_name": "CSNew005",
    "next_name": "CSNew004",
    "duration_format": "days"
    }
]
```