Validating file "1805789.pdf" for conformance level pdfa-1b
xmp:ModifyDate :: Wrong value type. Expected type 'Date'.
xmp:CreateDate :: Wrong value type. Expected type 'Date'.
dc:description :: Wrong value type. Expected type 'lang alt'.
dc:description/*[0] :: Missing language qualifier.
The XMP property 'dc:description' is not synchronized with the document information entry 'Subject'.
The XMP property 'xmp:CreateDate' is not synchronized with the document information entry 'CreationDate'.
The XMP property 'xmp:ModifyDate' is not synchronized with the document information entry 'ModDate'.
The value of the key N is 4 but must be 3.
The document does not conform to the requested standard.
The document doesn't conform to the PDF reference (missing required entries, wrong value types, etc.).
The document's meta data is either missing or inconsistent or corrupt.
Done.