// Null checks for mandatory fields
if (commonFields.getDocumentAuthorSDSID() == null) {
missingFields.addMissingField("DocumentAuthorSDSID", "The SDS ID of the document author must be provided");
}
if (commonFields.getDocumentAuthorRole() == null) {
missingFields.addMissingField("DocumentAuthorRole", "The job role of the document author must be provided");
}
if (commonFields.getDocumentAuthorName() == null) {
missingFields.addMissingField("DocumentAuthorName", "The name of the document author must be provided");
}
if (commonFields.getDocumentAuthorOrganisationODSID() == null) {