Bom dia, meu cliente teve o mesmo problema, fiz uma pesquisa na internet e encontre o modelo abaixo e orientei a meu cliente a utilizar o CSOSN 900, só ainda não sei se deu certo.
XML de exemplo
<?xml version="1.0" encoding="UTF-8"?>
<nfeProc xmlns="http://www.portalfiscal.inf.br/nfe" versao="2.00">
<NFe xmlns="http://www.portalfiscal.inf.br/nfe">
<infNFe versao="2.00" Id="NFeOcultoOcultoOculto72488">
<ide>
<cUF>35</cUF>
<cNF>64277248</cNF>
<natOp>Importacao</natOp>
<indPag>0</indPag>
<mod>55</mod>
<serie>111</serie>
<nNF>2</nNF>
<dEmi>2011-04-14</dEmi>
<dSaiEnt>2011-04-15</dSaiEnt>
<hSaiEnt>08:10:01</hSaiEnt>
<!A importacao e uma nota fiscal de entrada, informar tpNF=0>
<tpNF>0</tpNF>
<cMunFG>3548500</cMunFG>
<tpImp>1</tpImp>
<tpEmis>1</tpEmis>
<cDV>8</cDV>
<tpAmb>2</tpAmb>
<finNFe>1</finNFe>
<procEmi>0</procEmi>
<verProc>NFe_Util_2Gv0.6d</verProc>
</ide>
<emit>
<CNPJ>Oculto0</CNPJ>
<xNome>MRM KATO ASAKURA EPP</xNome>
<xFant>FlexDocs Documentos Eletronicos</xFant>
<enderEmit>
<xLgr>Av. Doutor Altino Arantes</xLgr>
<nro>131</nro>
<xCpl>14 andar - sala 145</xCpl>
<xBairro>Centro</xBairro>
<cMun>3534708</cMun>
<xMun>Ourinhos</xMun>
<UF>SP</UF>
<CEP>19900030</CEP>
<cPais>1058</cPais>
<xPais>BRASIL</xPais>
</enderEmit>
<IE>Oculto</IE>
<CRT>1</CRT>
</emit>
<dest>
<!o CNPJ do remetente estrangeiro deve ser omitido>
<CNPJ />
<xNome>Ling Ling Eletronics</xNome>
<enderDest>
<xLgr>Long Road</xLgr>
<nro>111</nro>
<xBairro>Shangai</xBairro>
<!o codigo do municipio de remetente estrangeiro deve ser informado com 9999999>
<cMun>9999999</cMun>
<!o municipio de remetente estrangeiro deve ser informado com EXTERIOR>
<xMun>EXTERIOR</xMun>
<UF>EX</UF>
<!informar o codigo do pais do remetente estrangeiro utilizando a tabela do BCB http://www.bcb.gov.br/Rex/TabPaises/Ftp/paises.txt>
<cPais>1600</cPais>
<xPais>CHINA</xPais>
<fone>Oculto</fone>
</enderDest>
<IE />
<email>@Oculto</email>
</dest>
<det nItem="1">
<prod>
<cProd>0001</cProd>
<cEAN>Oculto</cEAN>
<xProd>LANTERNA A PILHA</xProd>
<!o NCM e de informacao obrigatoria na importacao>
<NCM>85131010</NCM>
<CFOP>3102</CFOP>
<uCom>UND</uCom>
<qCom>1000</qCom>
<vUnCom>1.00</vUnCom>
<vProd>1000.00</vProd>
<cEANTrib>Oculto</cEANTrib>
<uTrib>UND</uTrib>
<qTrib>1000.00</qTrib>
<vUnTrib>1.00</vUnTrib>
<vOutro>160.00</vOutro>
<indTot>1</indTot>
<!o grupo DI e de informacao obrigatoria na importacao>
<DI>
<nDI>Oculto</nDI>
<dDI>2010-11-25</dDI>
<xLocDesemb>ALF SANTOS</xLocDesemb>
<UFDesemb>SP</UFDesemb>
<dDesemb>2011-04-14</dDesemb>
<cExportador>12345</cExportador>
<adi>
<nAdicao>1</nAdicao>
<nSeqAdic>1</nSeqAdic>
<cFabricante>12345</cFabricante>
</adi>
</DI>
<xPed>Pedido 2010-001</xPed>
<nItemPed>1</nItemPed>
</prod>
<imposto>
<ICMS>
<ICMSSN900>
<orig>1</orig>
<!INFORMAR O CSOSN 900 na importacao>
<CSOSN>900</CSOSN>
<modBC>3</modBC>
<vBC>1737.81</vBC>
<pICMS>18.00</pICMS>
<vICMS>312.81</vICMS>
</ICMSSN900>
</ICMS>
<!o grupo IPI e de informacao obrigatoria na importacao>
<IPI>
<cEnq>999</cEnq>
<IPITrib>
<CST>00</CST>
<vBC>1150.00</vBC>
<pIPI>10.00</pIPI>
<vIPI>115.00</vIPI>
</IPITrib>
</IPI>
<!o grupo II e de informacao obrigatoria na importacao>
<II>
<vBC>1000.00</vBC>
<vDespAdu>100.00</vDespAdu>
<vII>150.00</vII>
<vIOF>60.00</vIOF>
</II>
<!informar o PIS - IMPORTACAO>
<PIS>
<PISAliq>
<CST>01</CST>
<vBC>1737.81</vBC>
<pPIS>1.65</pPIS>
<vPIS>28.67</vPIS>
</PISAliq>
</PIS>
<!informar o COFINS - IMPORTACAO>
<COFINS>
<COFINSAliq>
<CST>01</CST>
<vBC>1737.81</vBC>
<pCOFINS>7.60</pCOFINS>
<vCOFINS>132.07</vCOFINS>
</COFINSAliq>
</COFINS>
</imposto>
</det>
<total>
<ICMSTot>
<vBC>1737.81</vBC>
<vICMS>312.81</vICMS>
<vBCST>0.00</vBCST>
<vST>0.00</vST>
<vProd>1000.00</vProd>
<vFrete>0.00</vFrete>
<vSeg>0.00</vSeg>
<vDesc>0.00</vDesc>
<vII>150.00</vII>
<vIPI>115.00</vIPI>
<vPIS>28.67</vPIS>
<vCOFINS>132.07</vCOFINS>
<vOutro>160.00</vOutro>
<vNF>1737.81</vNF>
</ICMSTot>
</total>
<transp>
<modFrete>1</modFrete>
</transp>
<infAdic>
<infCpl>EXEMPLO DE NF-E DE IMPORTACAO PARA EMISSOR OPTANTE DO SIMPLES NACIONAL - CRT=1 */* Declaracao de Importacao - DI Nro: Oculto - Data de Desembaraco: 15-04-2011 - ALF-SANTOS/SP */* Valor do Imposto de Importacao: R$ 150,00 - Valor do IPI: R$ 115,00 - Valor de Despesas Aduaneiras: R$ 100,00 - Valor do IOF: R$ 60,00 */* Valor do ICMS: R$ 312,81 - Valor do PIS-Importacao: R$ 28,67 - Valor do COFINS-Importacao: R$ 132,07 */* ***IMPORTANTE: As informacoes e valores utilizados sao todos ficticios para mera demonstracao de preenchimento dos campos exigidos na emissao da NF-e da versao 2.00 do leiaute.*** */*
</infAdic>
</infNFe>
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
<SignedInfo>
<CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
<Reference URI="#NFeOcultoOcultoOculto72488">
<Transforms>
<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
<Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
</Transforms>
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
<DigestValue>zvgYGFr2HKmuhAYApt89ILbisBY=</DigestValue>
</Reference>
</SignedInfo>
<SignatureValue>A+qcCNtgVVD7jt0IyyyVKU7DzT5ZrJlCrL36xd13aPkDD7P/+I9Vg+LX6iyxYsXD2wspM2NR+27gtbp7p2mug4r9j0YJfZ1CSpSreAc4GDUQkva/hQqF84IxMCusYcgr0TuC6fQZyVVqpmHYKuj+naxGi4h4fa+Pas/N/hj04zU=</SignatureValue>
<KeyInfo>
<X509Data>
<X509Certificate>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</X509Certificate>
</X509Data>
</KeyInfo>
</Signature>
</NFe>
<protNFe versao="2.00" xmlns="http://www.portalfiscal.inf.br/nfe">
<infProt>
<tpAmb>2</tpAmb>
<verAplic>SP_NFE_PL_006h</verAplic>
<chNFe>OcultoOcultoOculto72488</chNFe>
<dhRecbto>2011-04-14T01:56:33</dhRecbto>
<nProt>Oculto66</nProt>
<digVal>zvgYGFr2HKmuhAYApt89ILbisBY=</digVal>
<cStat>100</cStat>
<xMotivo>Autorizado o uso da NF-e</xMotivo>
</infProt>
</protNFe>
</nfeProc>
TEXT no padrão do emissor gratuito
NOTA FISCAL|1|
A|2.00|NFe|
B|35|00605000|Importacao|0|55|111|2|2011-04-14|2011-04-15|08:10:01|0|3548500|1|1|9|2|1|0|NFe_Util_2Gv0.6d|||
C|MRM KATO ASAKURA EPP|FlexDocs Documentos Eletronicos|Oculto||||1|
C02|Oculto0|
C05|Av. Doutor Altino Arantes|131|14 andar - sala 145|Centro|3534708|Ourinhos|SP|19900030|1058|BRASIL||
E|Ling Ling E@Oculto|
E02||
E05|Long Road|111||Shangai|9999999|EXTERIOR|EX| |1600|CHINA|Oculto|
H|1||
I|0001|Oculto|LANTERNA A PILHA|85131010| |3102|UND|1000|1.00|1000.00|Oculto|UND|1000.00|1.00| | | |160.00|1|Pedido 2010-001|1|
I18|Oculto|2010-11-25|ALF SANTOS|SP|2011-04-14|12345|
I25|1|1|12345|0|
M|
N|
N10h|1|900|3|0.00|1737.81|18.00|312.81|0|0.00|0.00|0.00|0.00|0.00|0.00|0.00|
O| | | | |999|
O07|00|115.00|
O10|1150.00|10.00|
P|1000.00|100.00|150.00|60.00|
Q|
Q02|01|1737.81|1.65|28.67|
S|
S02|01|1737.81|7.60|132.07|
W|
W02|1737.81|312.81|0.00|0.00|1000.00|0.00|0.00|0.00|150.00|115.00|28.67|132.07|160.00|1737.81|
X|1|
Z| |EXEMPLO DE NF-E DE IMPORTACAO PARA EMISSOR OPTANTE DO SIMPLES NACIONAL - CRT=1 */* Declaracao de Importacao - DI Nro: Oculto - Data de Desembaraco: 15-04-2011 - ALF-SANTOS/SP */* Valor do Imposto de Importacao: R$ 150,00 - Valor do IPI: R$ 115,00 - Valor de Despesas Aduaneiras: R$ 100,00 - Valor do IOF: R$ 60,00 */* Valor do ICMS: R$ 312,81 - Valor do PIS-Importacao: R$ 28,67 - Valor do COFINS-Importacao: R$ 132,07 */* ***IMPORTANTE: As informacoes e valores utilizados sao todos ficticios para mera demonstracao de preenchimento dos campos exigidos na emissao da NF-e da versao 2.00 do leiaute.***