Erro identificado na validação

Olá, fui verificar o arquivo para depósito do DOI e me parece assim:
File:
20160512-1023-issues.xml

[Error] :2:26766: cvc-enumeration-valid: Value ‘’ is not facet-valid
with respect to enumeration ‘[text/plain, text/richtext, text/enriched,
text/tab-separated-values, text/html, text/sgml, text/css, text/xml,
text/xml-external-parsed-entity, multipart/mixed, multipart/alternative,
multipart/digest, multipart/parallel, multipart/appledouble,
multipart/header-set, multipart/form-data, multipart/report,
multipart/voice-message, multipart/signed, multipart/encrypted,
multipart/byteranges, application/eps, application/epub+zip,
application/octet-stream, application/postscript, application/rtf,
application/applefile, application/mac-binhex40,
application/wordperfect5.1, application/pdf, application/x-gzip,
application/zip, application/gzip, application/macwriteii,
application/msword, application/sgml, application/cals-1840,
application/pgp-encrypted, application/pgp-signature,
application/pgp-keys, application/sgml-open-catalog, application/rc,
application/xml, application/xml-external-parsed-entity,
application/xml-dtd, application/batch-SMTP, application/ipp,
application/ocsp-request, application/ocsp-response,
application/vnd.oasis.opendocument.text,
application/vnd.oasis.opendocument.presentation,
application/vnd.oasis.opendocument.spreadsheet,
application/vnd.ms-excel, application/vnd.ms-powerpoint,
application/vnd.openxmlformats-officedocument.presentationml.presentation,
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,
application/vnd.openxmlformats-officedocument.wordprocessingml.document,
image/jpeg, image/gif, image/fits, image/ief, image/g3fax, image/tiff,
image/Graphics-Metafile, image/png, audio/basic, audio/32kadpcm,
audio/mpeg, audio/parityfec, audio/MP4A-LATM, audio/mpa-robust,
video/x-ms-wmv, video/avi, video/mpeg, video/quicktime, video/pointer,
video/parityfec, video/MP4V-ES, video/mp4, chemical/x-alchemy,
chemical/x-cache-csf, chemical/x-cactvs-binary,
chemical/x-cactvs-binary, chemical/x-cactvs-binary, chemical/x-cdx,
chemical/x-cerius, chemical/x-chemdraw, chemical/x-cif,
chemical/x-mmcif, chemical/x-chem3d, chemical/x-cmdf,
chemical/x-compass, chemical/x-crossfire, chemical/x-cml,
chemical/x-csml, chemical/x-ctx, chemical/x-cxf,
chemical/x-daylight-smiles, chemical/x-embl-dl-nucleotide,
chemical/x-galactic-spc, Data/spcvue.htm, chemical/x-gamess-input,
chemical/x-gaussian-input, chemical/x-gaussian-checkpoint,
chemical/x-gaussian-cube, chemical/x-gcg8-sequence, chemical/x-genbank,
chemical/x-isostar, chemical/x-jcamp-dx, chemical/x-kinemage,
chemical/x-macmolecule, chemical/x-macromodel-input,
chemical/x-mdl-molfile, chemical/x-mdl-rdfile, chemical/x-mdl-rxnfile,
chemical/x-mdl-sdfile, chemical/x-mdl-tgf, chemical/x-mif,
chemical/x-mol2, chemical/x-molconn-Z, chemical/x-mopac-input,
chemical/x-mopac-graph, chemical/x-ncbi-asn1,
chemical/x-ncbi-asn1-binary, chemical/x-pdb, chemical/x-swissprot,
chemical/x-vamas-iso14976, chemical/x-vmd, chemical/x-xtel,
chemical/x-xyz, model/vrml, audio/x-wav, video/x-flv]’. It must be a
value from the enumeration.

[Error] :2:26766: cvc-attribute.3: The value ‘’ of attribute ‘mime_type’
on element ‘resource’ is not valid with respect to its type, ‘null’.

não consegui identificar o erro… é possível me ajudar?
Tatyane

oi Tatyane,

veja esse post no forum do PKP, o problema esta relacionado a uma das suas composicoes finais que esta sem o tipo definido.