fmt.Errorf("Invalid STS API version %s, expecting %s", r.Form.Get("Version"), stsAPIVersion))
		return
	}

	ldapUsername := r.Form.Get(stsLDAPUsername)
	ldapPassword := r.Form.Get(stsLDAPPassword)

	if ldapUsername == "" || ldapPassword == "" {
		writeSTSErrorResponse(ctx, w, ErrSTSMissingParameter, fmt.Errorf("LDAPUsername and LDAPPassword cannot be empty"))
		return
	}

	action := r.Form.Get(stsAction)
	switch action {

## API Request Parameters

### LDAPUsername

Is AD/LDAP username to login. Application must ask user for this value to successfully obtain rotating access credentials from AssumeRoleWithLDAPIdentity.