DeleteTask

Project management service 1.8: Deletes a task that has no time registrations, by GUID, and returns it as it was.


Service	Project management 1.8
Endpoint	`POST https://app{server-number}.timelog.com/{account}/WebServices/ProjectManagement/V1_8/ProjectManagementServiceSecure.svc`
SOAPAction	`DeleteTaskRequest`
Content-Type	`text/xml; charset=utf-8`
Authentication	A token from GetToken
Changes data	Yes
Safe to retry	Depends on the call

How it works

Loads the task by GUID and its project, removes the task from the project's WBS and deletes it. Refused when time is registered on the task, when a fixed-price task's payment is invoiced, for a task of a completed task-driven revenue contract with vouchers, and for a parent whose sub-tasks cannot be deleted.

Parameters

Each parameter has one label: Required, Conditional (required depending on other values) or Optional. Send them in the order shown.

taskGuidguid

Required

GUID of the task to delete.

tokenSecurityToken

Required

The token from GetToken: Initials, Expires and Hash, sent back unchanged.

Request

POST /{account}/WebServices/ProjectManagement/V1_8/ProjectManagementServiceSecure.svc HTTP/1.1
Host: app{server-number}.timelog.com
Content-Type: text/xml; charset=utf-8
SOAPAction: "DeleteTaskRequest"

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
                  xmlns:pm="http://www.timelog.com/api/tlp/v1_8"
                  xmlns:tok="http://www.timelog.com/api/tlp/v1_3">
  <soapenv:Body>
    <pm:DeleteTask>
      <pm:taskGuid>{taskGuid}</pm:taskGuid>
      <pm:token>
        <tok:Initials>{Initials from GetToken}</tok:Initials>
        <tok:Expires>{Expires from GetToken, unchanged}</tok:Expires>
        <tok:Hash>{Hash from GetToken}</tok:Hash>
      </pm:token>
    </pm:DeleteTask>
  </soapenv:Body>
</soapenv:Envelope>

curl -X POST "https://app{server-number}.timelog.com/{account}/WebServices/ProjectManagement/V1_8/ProjectManagementServiceSecure.svc" \
  -H "Content-Type: text/xml; charset=utf-8" \
  -H 'SOAPAction: "DeleteTaskRequest"' \
  --data-binary @request.xml

import requests

URL = "https://app{server-number}.timelog.com/{account}/WebServices/ProjectManagement/V1_8/ProjectManagementServiceSecure.svc"
SOAP_ACTION = '"DeleteTaskRequest"'

envelope = """<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
                  xmlns:pm="http://www.timelog.com/api/tlp/v1_8"
                  xmlns:tok="http://www.timelog.com/api/tlp/v1_3">
  <soapenv:Body>
    <pm:DeleteTask>
      <pm:taskGuid>{taskGuid}</pm:taskGuid>
      <pm:token>
        <tok:Initials>{Initials from GetToken}</tok:Initials>
        <tok:Expires>{Expires from GetToken, unchanged}</tok:Expires>
        <tok:Hash>{Hash from GetToken}</tok:Hash>
      </pm:token>
    </pm:DeleteTask>
  </soapenv:Body>
</soapenv:Envelope>"""

response = requests.post(
    URL,
    data=envelope.encode("utf-8"),
    headers={"Content-Type": "text/xml; charset=utf-8", "SOAPAction": SOAP_ACTION},
    timeout=60,
)
result = parse_result(response)  # see "Responses and errors"

Replace every {…} placeholder with your own value.

Response

The call returns the standard response envelope. Check ResponseState first: a failed call still returns HTTP 200.

ResponseStatestring

Required

Success, Invalid or Error.

ErrorCodeinteger

0 on success, otherwise the error code. See Errors.

ReturnTask[]

Response<Task> with one item: the task as loaded BEFORE the delete. Failure: Error envelope, empty Return.

Example response

HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
  <s:Body>
    <DeleteTaskResponse xmlns="http://www.timelog.com/api/tlp/v1_8">
      <DeleteTaskResult xmlns:a="http://api.timelog.com"
                        xmlns:b="http://www.timelog.com/api/tlp/v1_7"
                        xmlns:c="http://api.timelog.com/services/crm/1_2"
                        xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
        <a:Return>
          <b:Task>
            <a:Action>Original</a:Action>
            <a:IsCustomFieldsLoaded>false</a:IsCustomFieldsLoaded>
            <a:CustomFields i:nil="true"/>
            <a:IsExternalKeysLoaded>false</a:IsExternalKeysLoaded>
            <a:ExternalKeys i:nil="true"/>
            <b:ID>3f2504e0-4f89-41d3-9a0c-305000000001</b:ID>
            <b:TaskID>1001</b:TaskID>
            <b:Name>Example </b:Name>
            <b:FullName>Example full</b:FullName>
            <b:No>1001</b:No>
            <b:Description>Example</b:Description>
            <b:Link>Example</b:Link>
            <b:BudgetHours>0</b:BudgetHours>
            <b:BudgetAmount>0</b:BudgetAmount>
            <b:StartDate>2026-10-01T00:00:00</b:StartDate>
            <b:EndDate>2026-10-01T00:00:00</b:EndDate>
            <b:TaskTypeID>1001</b:TaskTypeID>
            <b:AdditionalTextIsRequired>false</b:AdditionalTextIsRequired>
            <b:ProjectSubContractID>1001</b:ProjectSubContractID>
            <b:HourlyRateID>1001</b:HourlyRateID>
            <b:IsReadyForInvoicing>false</b:IsReadyForInvoicing>
            <b:Details>
              <b:CustomerHeader>
                <c:ID>1001</c:ID>
                <c:Name>Example </c:Name>
                <c:No>1001</c:No>
                <c:GUID>3f2504e0-4f89-41d3-9a0c-305000000002</c:GUID>
              </b:CustomerHeader>
              <b:ProjectHeader>
                <b:ID>1001</b:ID>
                <b:ProjectGUID>3f2504e0-4f89-41d3-9a0c-305000000003</b:ProjectGUID>
                <b:Name>Example </b:Name>
                <b:No>1001</b:No>
                <b:IsActive>true</b:IsActive>
                <b:IsGeneralProject>false</b:IsGeneralProject>
                <b:StartDate>2026-10-01T00:00:00</b:StartDate>
                <b:EndDate>2026-10-01T00:00:00</b:EndDate>
                <b:MainContractID>1001</b:MainContractID>
              </b:ProjectHeader>
              <b:Type>
                <b:ID>1001</b:ID>
                <b:ID2>0</b:ID2>
                <b:Name>Example </b:Name>
                <b:Name2>Example</b:Name2>
              </b:Type>
              <b:CustomField>Example</b:CustomField>
            </b:Details>
            <b:State>
              <b:IsActive>true</b:IsActive>
            </b:State>
          </b:Task>
        </a:Return>
        <a:ReturnTypeDescription>Task</a:ReturnTypeDescription>
        <a:Request>…</a:Request>
        <a:ResponseState>Success</a:ResponseState>
        <a:Messages>
          <a:APIMessage>
            <a:Message>Duration of call was 0,0421337 sec.</a:Message>
            <a:Severity>Message</a:Severity>
            <a:ErrorCode>0</a:ErrorCode>
          </a:APIMessage>
        </a:Messages>
        <a:ErrorCode>0</a:ErrorCode>
        <a:IsReturnPaged>false</a:IsReturnPaged>
        <a:TotalPageCount>0</a:TotalPageCount>
      </DeleteTaskResult>
    </DeleteTaskResponse>
  </s:Body>
</s:Envelope>

Illustrative example: built from the service description (WSDL) in the same format as a real response, with made-up values. The Request block is shortened.

Errors

All errors come back with HTTP 200: check ResponseState, ErrorCode and Messages. The errors every operation can return (expired or invalid token, API not enabled, HTTPS required, general errors) are listed once in Responses and errors.

Errors specific to this operation:

ResponseState	ErrorCode	Message	What it means	What to do
Error	40001	Error during call on TimeLog.API, Message 'Unable to Delete Task with Registrations, Task ID = '{TaskID}'	Time is registered on the task.	—
Error	40001	Error during call on TimeLog.API, Message 'Failed to delete task due to the payment attached has been invoiced. To delete the task please credit the invoice.'	Fixed-price task with an invoiced payment.	Credit the invoice first, or close the task instead.
Error	40001	Error during call on TimeLog.API, Message 'Task in completed task driven revenue contract cannot be deleted'	Task of a completed task-driven revenue contract with vouchers.	Leave the task in place, or reopen the contract first.
Error	40001	Error during call on TimeLog.API, Message 'Unable to Delete Task with TaskID ='{TaskID}', because task is parent, and child tasks do not allow delete'	Parent task with a sub-task that cannot be deleted.	—

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