Creating a task using the API(FSM) without the authentication tag in the request

Hi,

When creating a task using the API already provided by FSM and POSTMAN to invoke it, using the following URL “/MetrixIntegrationService/M5WebService.asmx/ProcessXML” to make the request, we send a tag with the authentication, with the credentials of a valid user like the following example:

Our question is whether it is possible to send the xml without this authentication tag that has the password visible, we tried to use "Authorization" as the following example:

 but it returns the following error "XML authentication failed."

Does anyone know if this is possible?

Best regards