Paulo estou colocando meu xml para você dar uma olhada, ja verifiquei
varias vezes e não acho erro, sera que pode me ajudar.
<?xml version="1.0" encoding="utf-8"?>
<PedidoEnvioLoteRPS xmlns:xsi="
http://www.w3.org/2001/XMLSchema-
<CPFCNPJRemetente>
<CNPJ>57797433002776</CNPJ>
</CPFCNPJRemetente>
<transacao>true</transacao>
<dtInicio>2011-02-16</dtInicio>
<dtFim>2011-02-19</dtFim>
<QtdRPS>117</QtdRPS>
<ValorTotalServicos>390600</ValorTotalServicos>
</Cabecalho>
<RPS xmlns="">
<Assinatura>i/noEJjEQfcAOUrc7p8/
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<ChaveRPS>
<InscricaoPrestador>26477220</InscricaoPrestador>
<SerieRPS>1</SerieRPS>
<NumeroRPS>248762</NumeroRPS>
</ChaveRPS>
<TipoRPS>RPS</TipoRPS>
<DataEmissao>2011-02-19</DataEmissao>
<StatusRPS>N</StatusRPS>
<TributacaoRPS>T</TributacaoRPS>
<ValorServicos>4900</ValorServicos>
<ValorDeducoes>0</ValorDeducoes>
<CodigoServico>7811</CodigoServico>
<AliquotaServicos>500</AliquotaServicos>
<ISSRetido>false</ISSRetido>
<CPFCNPJTomador>
<CPF>33765467898</CPF>
</CPFCNPJTomador>
<InscricaoMunicipalTomador>00000000</InscricaoMunicipalTomador>
<InscricaoEstadualTomador>0</InscricaoEstadualTomador>
<RazaoSocialTomador>0</RazaoSocialTomador>
<EnderecoTomador>
<TipoLogradouro>0</TipoLogradouro>
<Logradouro>0000000000</Logradouro>
<NumeroEndereco>00000</NumeroEndereco>
<ComplementoEndereco>00000000</ComplementoEndereco>
<Bairro>0000000000</Bairro>
<Cidade>0000000</Cidade>
<UF>00</UF>
<CEP>0000000</CEP>
</EnderecoTomador>
<Discriminacao>Guarda e Estacionamento de Veiculos Terrestres
Automotores</Discriminacao>
</RPS>
<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="">
<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>WQXwgND24EFX/tcMAns44ILTlkk=</DigestValue>
</Reference>
</SignedInfo> <SignatureValue>fW2kT/
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xHbfs3wP8bN+4S+3wb74scgN82l++XMmSG1BiwBE1t8ysWcuQ=</SignatureValue>
<KeyInfo>
<X509Data>
<X509Certificate>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vadSobfOEWkA0lcLpz2nqa9VnxJTwmj8CzNagY3EIuWo0Do=</X509Certificate>
</X509Data>
</KeyInfo>
</Signature>
</PedidoEnvioLoteRPS>