How to delete resource as salesperson

Summary:

How to delete existing resource salesperson

Content (required):

Some how we entered future date as start date, I want to change start date or delete the resource as salesperson, We tried to update start date using soap, We are getting below response, Please advise

Ref: Existed Salesperson Information Is Not Displayed in Manage Resources (Doc ID 2833572.1)

Version (include the version you are using, if applicable):

Soap Response:

<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">

  <env:Header/>

  <env:Body>

   <env:Fault>

     <faultcode>env:Server</faultcode>

     <faultstring>JBO-27008: Attribute StartDateActive in view object ResourceSalesrep1 cannot be set.</faultstring>