addValidationErrors(ctx, new PDFAIdentificationValidation().validatePDFAIdentifer(metadata));
// Call rdf:about checking
try
{
new RDFAboutAttributeConcordanceValidation().validateRDFAboutAttributes(metadata);
}
catch (DifferentRDFAboutException e)
{
addValidationError(ctx, new ValidationError(
PreflightConstants.ERROR_METADATA_RDF_ABOUT_ATTRIBUTE_INEQUAL_VALUE, e.getMessage(), e));