GetCustomerByGUID
CRM service 1.4: Returns one customer, identified by its GUID, optionally with its custom fields and external keys.
| Service | CRM 1.4 |
| Endpoint | POST https://app{server-number}.timelog.com/{account}/WebServices/CRM/V1_4/CRMServiceSecure.svc |
| SOAPAction | http://api.timelog.com/services/crm/1_4/ICRMService/GetCustomerByGUID |
| Content-Type | text/xml; charset=utf-8 |
| Authentication | A token from GetToken |
| Changes data | No |
| Safe to retry | Yes |
How it works
Reads a single customer by the customer's GUID - the identifier contacts and the other GUID-based CRM operations use. Same payload and flags as GetCustomerByID: Return[0] is the Customer; set loadCustomFields / loadExternalKeys to fill CustomFields / ExternalKeys. An unknown GUID is an ERROR, not an empty result: ResponseState Error, ErrorCode 40001 and a data-layer message.
Parameters
Each parameter has one label: Required, Conditional (required depending on other values) or Optional. Send them in the order shown.
GUID of the customer.
Optional. Default false. true = fill CustomFields.
Optional. Default false. true = fill ExternalKeys.
The token from GetToken: Initials, Expires and Hash, sent back unchanged.
Request
POST /{account}/WebServices/CRM/V1_4/CRMServiceSecure.svc HTTP/1.1
Host: app{server-number}.timelog.com
Content-Type: text/xml; charset=utf-8
SOAPAction: "http://api.timelog.com/services/crm/1_4/ICRMService/GetCustomerByGUID"
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:crm="http://api.timelog.com/services/crm/1_4"
xmlns:tok="http://www.timelog.com/api/tlp/v1_3">
<soapenv:Body>
<crm:GetCustomerByGUID>
<crm:guid>{guid}</crm:guid>
<crm:loadCustomFields>false</crm:loadCustomFields>
<crm:loadExternalKeys>false</crm:loadExternalKeys>
<crm:token>
<tok:Initials>{Initials from GetToken}</tok:Initials>
<tok:Expires>{Expires from GetToken, unchanged}</tok:Expires>
<tok:Hash>{Hash from GetToken}</tok:Hash>
</crm:token>
</crm:GetCustomerByGUID>
</soapenv:Body>
</soapenv:Envelope>
curl -X POST "https://app{server-number}.timelog.com/{account}/WebServices/CRM/V1_4/CRMServiceSecure.svc" \
-H "Content-Type: text/xml; charset=utf-8" \
-H 'SOAPAction: "http://api.timelog.com/services/crm/1_4/ICRMService/GetCustomerByGUID"' \
--data-binary @request.xml
import requests
URL = "https://app{server-number}.timelog.com/{account}/WebServices/CRM/V1_4/CRMServiceSecure.svc"
SOAP_ACTION = '"http://api.timelog.com/services/crm/1_4/ICRMService/GetCustomerByGUID"'
envelope = """<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:crm="http://api.timelog.com/services/crm/1_4"
xmlns:tok="http://www.timelog.com/api/tlp/v1_3">
<soapenv:Body>
<crm:GetCustomerByGUID>
<crm:guid>{guid}</crm:guid>
<crm:loadCustomFields>false</crm:loadCustomFields>
<crm:loadExternalKeys>false</crm:loadExternalKeys>
<crm:token>
<tok:Initials>{Initials from GetToken}</tok:Initials>
<tok:Expires>{Expires from GetToken, unchanged}</tok:Expires>
<tok:Hash>{Hash from GetToken}</tok:Hash>
</crm:token>
</crm:GetCustomerByGUID>
</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"
{…} placeholder with your own value.Response
The call returns the standard response envelope. Check ResponseState first: a failed call still returns HTTP 200.
Success, Invalid or Error.
0 on success, otherwise the error code. See Errors.
Response<Customer>: Return holds exactly one Customer. Messages holds only the call duration. Never empty on success: an unknown GUID is ResponseState Error.
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>
<GetCustomerByGUIDResponse xmlns="http://api.timelog.com/services/crm/1_4">
<GetCustomerByGUIDResult xmlns:a="http://api.timelog.com"
xmlns:b="http://api.timelog.com/services/crm/1_4"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<a:Return>
<b:Customer>
<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>1001</b:ID>
<b:GUID>3f2504e0-4f89-41d3-9a0c-305000000001</b:GUID>
<b:Name>Example </b:Name>
<b:No>1001</b:No>
<b:TimeStamp>AAAAAAAAAAA=</b:TimeStamp>
<b:VAT>0</b:VAT>
<b:CalculateVAT>false</b:CalculateVAT>
<b:DefaultDiscountPercent>0</b:DefaultDiscountPercent>
<b:Address>
<a:Address1>Example</a:Address1>
<a:Address2>Example</a:Address2>
<a:Address3>Example</a:Address3>
<a:ZipCode>1000</a:ZipCode>
<a:City>Copenhagen</a:City>
<a:State>Example</a:State>
<a:Country>DK</a:Country>
</b:Address>
<b:Fax>+45 00 00 00 00</b:Fax>
<b:WebSite>https://www.example.com</b:WebSite>
<b:Phone>+45 00 00 00 00</b:Phone>
<b:Email>info@example.com</b:Email>
<b:KAM>Example</b:KAM>
<b:EAN>Example</b:EAN>
<b:IsOIOCustomer>false</b:IsOIOCustomer>
<b:CreditorID>Example</b:CreditorID>
<b:AccountNo>1001</b:AccountNo>
<b:Contacts>
<b:ContactHeader>
<b:GUID>3f2504e0-4f89-41d3-9a0c-305000000002</b:GUID>
<b:FirstName>Example first</b:FirstName>
<b:LastName>Example last</b:LastName>
</b:ContactHeader>
</b:Contacts>
<b:Industry>Example</b:Industry>
<b:Status>Example</b:Status>
<b:VATNo>1001</b:VATNo>
<b:Currency>DKK</b:Currency>
<b:PaymentTermId>1001</b:PaymentTermId>
<b:InvoicingAddress>
<a:Address1>Example</a:Address1>
<a:Address2>Example</a:Address2>
<a:Address3>Example</a:Address3>
<a:ZipCode>1000</a:ZipCode>
<a:City>Copenhagen</a:City>
<a:State>Example</a:State>
<a:Country>DK</a:Country>
</b:InvoicingAddress>
<b:InvoicingName>Example invoicing</b:InvoicingName>
<b:UseInvoicingAddress>false</b:UseInvoicingAddress>
<b:CustomerSinceDate>2026-10-01T00:00:00</b:CustomerSinceDate>
<b:NickName>Example nick</b:NickName>
<b:OrganizationNumber>1001</b:OrganizationNumber>
<b:KAM2>Example</b:KAM2>
<b:Details>
<b:Status>
<b:ID>1001</b:ID>
<b:Name>Example </b:Name>
<b:Type>IsShownInCustomers</b:Type>
</b:Status>
<b:Industry>
<b:ID>1001</b:ID>
<b:Branche>Example</b:Branche>
</b:Industry>
<b:Currency>
<a:ID>1001</a:ID>
<a:Abbreviation>DKK</a:Abbreviation>
<a:Rate>0</a:Rate>
<a:RateDate>2026-10-01T00:00:00</a:RateDate>
<a:DescriptiveName>Example descriptive</a:DescriptiveName>
</b:Currency>
<b:KAM>
<a:ID>1001</a:ID>
<a:Initials>ABC</a:Initials>
<a:FullName>Example full</a:FullName>
</b:KAM>
<b:KAM2>
<a:ID>1001</a:ID>
<a:Initials>ABC</a:Initials>
<a:FullName>Example full</a:FullName>
</b:KAM2>
</b:Details>
</b:Customer>
</a:Return>
<a:ReturnTypeDescription>Customer</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>
</GetCustomerByGUIDResult>
</GetCustomerByGUIDResponse>
</s:Body>
</s:Envelope>
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 retrieve result from … with GUID{guid}' | No customer has this GUID. | Check the customer GUID. |