RT erro na valçidação da NF-e

[netwa...@terra.com.br]

Fatal error: Uncaught NFePHP\Common\Exception\ValidatorException: This XML is not valid. Element '{http://www.portalfiscal.inf.br/nfe}IBSCBS': This element is not expected. Expected is one of ( {http://www.portalfiscal.inf.br/nfe}COFINSST,

Por favor , pessoal, como resolver o erro acima. Simplesmente adicionei as tags da RT logo apos 

- <COFINS>

- <COFINSOutr>

  <CST>49</CST>

  <vBC>0</vBC>

  <pCOFINS>0</pCOFINS>

  <vCOFINS>0</vCOFINS>

  </COFINSOutr>

  </COFINS>

- <IBSCBS>

  <CST>000</CST>

  <cClassTrib>000001</cClassTrib>

- <gIBSCBS>

  <vBC>499.00</vBC>

- <gIBSUF>

  <pIBSUF>0.10</pIBSUF>

  <vIBSUF>0.50</vIBSUF>

  </gIBSUF>

- <gIBSMun>

  <pIBSMun>0.00</pIBSMun>

  <vIBSMun>0.00</vIBSMun>

  </gIBSMun>

  </gIBSCBS>

- <gCBS>

  <pCBS>0.90</pCBS>

  <vCBS>4.49</vCBS>

  </gCBS>

  </IBSCBS>

  </imposto>

Socorro...