private function validateAcquirerTransactionRequest(AcquirerTransactionRequest $input)
{
$length = preg_match('/[A-Z]{6,6}[A-Z2-9][A-NP-Z0-9]([A-Z0-9]{3,3}){0,1}/', $input->getIssuerID(), $matches);
if ($length !== 1 || $matches[0] !== $input->getIssuerID()) {
throw new ValidationException("Issuer.issuerID does not match format.");
}
$this->validateMerchant($input->getMerchant());
$this->validateTransaction($input->getTransaction());
}
private function serializeAcquirerTransactionRequest(DOMElement $element, AcquirerTransactionRequest $request)
{
$item = $element->ownerDocument->createElement("Issuer");
$item->appendChild(new DOMElement("issuerID", $request->getIssuerID()));
$element->appendChild($item);
$item = $element->ownerDocument->createElement("Merchant");
$this->serializeMerchant($item, $request->getMerchant(), true);
$element->appendChild($item);
$item = $element->ownerDocument->createElement("Transaction");
$this->serializeTransaction($item, $request->getTransaction());
$element->appendChild($item);
}