Getting the error "Number of packages exceeds maximum" from FedEX API - perl

Question

I am getting "FedEx Ship Error: (8522) Number of packages exceeds maximum" error. I am trying to send a multiple-package shipment request to fedEX, but it is getting failed in first package request only.
For sending multiple shipment request to FedEX, we have to send separate request for each package, the master tracking information will be returned in reply from the first package requested. That master tracking information is then inserted into the requests for each additional package requested for that multiple-package shipment.
The example below is first package request.
Below is the XML request Body I am sending to FedEX API "https://wsbeta.fedex.com:443/xml"
The code is just preparing the data structure, converting it into XML and hitting the fedEX API with XML request.
my $http_request = HTTP::Request->new('POST', $config->{'URL'});
$http_request->content_type('application/x-www-form-urlencoded');
$http_request->content(Encode::encode_utf8($xml_request_body));
my $http_response;
eval {
$http_response = $ua->request($http_request);
};
return errorShipResponse($p) if (!defined $http_response || !$http_response->is_success);
my $response;
eval {
$response = XML::Simple::XMLin(
$http_response->content,
ForceArray => 1,
NSExpand => 1
);
};
$xml_request_body
<?xml version="1.0" encoding="UTF-8"?>
<ProcessShipmentRequest xmlns="http://fedex.com/ws/ship/v12">
<WebAuthenticationDetail>
<UserCredential>
<Key>aaaaaaaaaaa</Key>
<Password>aaaaaaaaaaaaaaaa</Password>
</UserCredential>
</WebAuthenticationDetail>
<ClientDetail>
<AccountNumber>111111111</AccountNumber>
<MeterNumber>111111111111</MeterNumber>
</ClientDetail>
<Version>
<ServiceId>ship</ServiceId>
<Major>12</Major>
<Intermediate>0</Intermediate>
<Minor>0</Minor>
</Version>
<RequestedShipment>
<ShipTimestamp>2016-09-06T06:42:41-04:00</ShipTimestamp>
<DropoffType>REGULAR_PICKUP</DropoffType>
<ServiceType>SMART_POST</ServiceType>
<PackagingType>YOUR_PACKAGING</PackagingType>
<TotalWeight>
<Units>LB</Units>
<Value>15.00</Value>
</TotalWeight>
<Shipper>
<AccountNumber>111111111111</AccountNumber>
<Tins>
<TinType>BUSINESS_STATE</TinType>
<Number444444444444</Number>
</Tins>
<Contact>
<CompanyName>aaaaaaaaaaaa</CompanyName>
<PhoneNumber>11111111</PhoneNumber>
</Contact>
<Address>
ADDRESS HERE
</Address>
</Shipper>
<Recipient>
<Contact>
<PersonName>mukta jain</PersonName>
<PhoneNumber>1234567899</PhoneNumber>
</Contact>
<Address>
<StreetLines>lwehcfkwdjh</StreetLines>
<City>NY</City>
<StateOrProvinceCode>NY</StateOrProvinceCode>
<PostalCode>12345</PostalCode>
<CountryCode>US</CountryCode>
<Residential>true</Residential>
</Address>
</Recipient>
<ShippingChargesPayment>
<PaymentType>SENDER</PaymentType>
<Payor>
<ResponsibleParty>
<AccountNumber>444444444</AccountNumber>
<Tins>
<TinType>BUSINESS_STATE</TinType>
<Number>4444444444</Number>
</Tins>
<Contact>
<CompanyName>aaaaaaaaa</CompanyName>
<PhoneNumber>111111111</PhoneNumber>
</Contact>
<Address>
<ADDRESS HERE>
</Address>
</ResponsibleParty>
</Payor>
</ShippingChargesPayment>
<SmartPostDetail>
<Indicia>PARCEL_SELECT</Indicia>
<AncillaryEndorsement>ADDRESS_CORRECTION</AncillaryEndorsement>
<SpecialServices>USPS_DELIVERY_CONFIRMATION</SpecialServices>
<HubId>1234</HubId>
<CustomerManifestId>123456</CustomerManifestId>
</SmartPostDetail>
<LabelSpecification>
<LabelFormatType>COMMON2D</LabelFormatType>
<ImageType>EPL2</ImageType>
<LabelStockType>STOCK_4X6</LabelStockType>
</LabelSpecification>
<RateRequestTypes>LIST</RateRequestTypes>
<PackageCount>3</PackageCount>
<RequestedPackageLineItems>
<SequenceNumber>1</SequenceNumber>
<GroupPackageCount>1</GroupPackageCount>
<Weight>
<Units>LB</Units>
<Value>5</Value>
</Weight>
<Dimensions>
<Length>7</Length>
<Width>7</Width>
<Height>7</Height>
<Units>IN</Units>
</Dimensions>
<CustomerReferences>
<CustomerReferenceType>INVOICE_NUMBER</CustomerReferenceType>
<Value>E2315141</Value>
</CustomerReferences>
<CustomerReferences>
<CustomerReferenceType>CUSTOMER_REFERENCE</CustomerReferenceType>
<Value>E2315141</Value>
</CustomerReferences>
</RequestedPackageLineItems>
</RequestedShipment>
</ProcessShipmentRequest>

Answer 1

You give us almost nothing to work with, so it's hard to be any help at all. But there's one thing that seems strange in your request body. Assuming that you're showing us a dump of a Perl data structure, it seems weird that all of your scalar values are implemented as anonymous arrays. For example, the line defining the package count is:
'PackageCount' => [ 3],
Where I'd expect to see:
'PackageCount' => 3,
It's possible that you have access to some documentation that tells you to do it this way, but it seems strange to me.
It would also explain the error message as the array reference would be interpreted as an integer which would almost certainly be far greater than any number expected by the API!
Update: When I wrote this answer, the question included what looked like a large Perl data structure which exhibited the weirdness that I discuss above. Now that has been changed to an XML document which seems to have the correct values. I have no idea where the original data structure came from or how it was used. And, in the absence of any feedback from the original poster, I have no idea how useful this answer is.