# Predecessors

### Add predecessor

Adds an existing task as a predecessor to provided task.

#### Parameters <a href="#parameters" id="parameters"></a>

| Parameter           | Description                             |
| ------------------- | --------------------------------------- |
| Task app name       | Name of Task app in SharePoint (not id) |
| Task ID             | ID of task                              |
| Predecessor task id | ID of predecessor task                  |

#### Output <a href="#output" id="output"></a>

Record with information about whether operation failed or not.

| Member       | Description                                                            |
| ------------ | ---------------------------------------------------------------------- |
| HasFailed    | Whether operation has failed or not                                    |
| ErrorMessage | A description of the failure, if any                                   |
| ErrorCode    | An error code related to operation failure. Is 0 if no failure occured |

#### Errors <a href="#errors" id="errors"></a>

| Error code | Description                                  |
| ---------- | -------------------------------------------- |
| 1000       | Unspecified error.                           |
| 1000001    | User is not authorized to perform operation. |
| 1000004    | Item with given id does not exist.           |

### Get predecessors <a href="#get-predecessors" id="get-predecessors"></a>

Gets all predecessors of given task.

#### Parameters <a href="#parameters" id="parameters"></a>

| Parameter     | Description                             |
| ------------- | --------------------------------------- |
| Task app name | Name of Task app in SharePoint (not id) |
| Task ID       | ID of task                              |

#### Output <a href="#output" id="output"></a>

Record with information about whether operation failed or not. If succesful, result of operation is stored in Results member

| Member       | Description                                                            |
| ------------ | ---------------------------------------------------------------------- |
| HasFailed    | Whether operation has failed or not                                    |
| ErrorMessage | A description of the failure, if any                                   |
| ErrorCode    | An error code related to operation failure. Is 0 if no failure occured |
| Results      | Table variable containing the results of operation                     |

Structure of Results Results

&#x20;TaskID

&#x20;Value

#### Errors <a href="#errors" id="errors"></a>

| Error code | Description                                  |
| ---------- | -------------------------------------------- |
| 1000       | Unspecified error.                           |
| 1000001    | User is not authorized to perform operation. |
| 1000004    | Item with given id does not exist.           |

### Remove all predecessor <a href="#remove-all-predecessor" id="remove-all-predecessor"></a>

Removes all predecessor of provided task.

#### Parameters <a href="#parameters" id="parameters"></a>

| Parameter     | Description                             |
| ------------- | --------------------------------------- |
| Task app name | Name of Task app in SharePoint (not id) |
| Task ID       | ID of task                              |

#### Output <a href="#output" id="output"></a>

Record with information about whether operation failed or not.

| Member       | Description                                                            |
| ------------ | ---------------------------------------------------------------------- |
| HasFailed    | Whether operation has failed or not                                    |
| ErrorMessage | A description of the failure, if any                                   |
| ErrorCode    | An error code related to operation failure. Is 0 if no failure occured |

#### Errors <a href="#errors" id="errors"></a>

| Error code | Description                                  |
| ---------- | -------------------------------------------- |
| 1000       | Unspecified error.                           |
| 1000001    | User is not authorized to perform operation. |
| 1000004    | Item with given id does not exist.           |

### Remove predecessor <a href="#remove-predecessor" id="remove-predecessor"></a>

Removes a predecessor of provided task.

#### Parameters <a href="#parameters" id="parameters"></a>

| Parameter           | Description                             |
| ------------------- | --------------------------------------- |
| Task app name       | Name of Task app in SharePoint (not id) |
| Task ID             | ID of task                              |
| Predecessor task id | ID of predecessor task                  |

#### Output <a href="#output" id="output"></a>

Record with information about whether operation failed or not.

| Member       | Description                                                            |
| ------------ | ---------------------------------------------------------------------- |
| HasFailed    | Whether operation has failed or not                                    |
| ErrorMessage | A description of the failure, if any                                   |
| ErrorCode    | An error code related to operation failure. Is 0 if no failure occured |

#### Errors <a href="#errors" id="errors"></a>

| Error code | Description                                  |
| ---------- | -------------------------------------------- |
| 1000       | Unspecified error.                           |
| 1000001    | User is not authorized to perform operation. |
| 1000004    | Item with given id does not exist.           |