PaymentAmount does not match line deposit plus +credit card payment total - dynamics-gp

Question

Using the Dynamics GP Web Service API on GP 2013, how do I apply payments to a Sales Invoice? I receive the error in the subject line. Here is my code:
static void CreateInvoice()
{
CompanyKey companyKey;
Context context;
SalesInvoice salesInvoice;
SalesDocumentTypeKey salesInvoiceType;
CustomerKey customerKey;
BatchKey batchKey;
SalesInvoiceLine salesInvoiceLine;
ItemKey invoiceItem;
Quantity invoiceCount;
Policy salesInvoiceCreatePolicy;
// Create an instance of the service
DynamicsGP wsDynamicsGP = new DynamicsGP();
// Be sure the default credentials are used
wsDynamicsGP.UseDefaultCredentials = true;
// Create a context with which to call the service
context = new Context();
// Specify which company to use (sample company)
companyKey = new CompanyKey();
companyKey.Id = (-1);
// Set up the context object
context.OrganizationKey = (OrganizationKey)companyKey;
// Create a sales invoice object
salesInvoice = new SalesInvoice();
// Create a sales document type key for the sales invoice
salesInvoiceType = new SalesDocumentTypeKey();
salesInvoiceType.Type = SalesDocumentType.Invoice;
// Populate the document type key for the sales invoice
salesInvoice.DocumentTypeKey = salesInvoiceType;
// Create a customer key
customerKey = new CustomerKey();
customerKey.Id = "ADMINISTRATORGL";
// Set the customer key property of the sales invoice
salesInvoice.CustomerKey = customerKey;
// Create a batch key
batchKey = new BatchKey();
batchKey.Id = "SALES INVOICES";
// Set the batch key property of the sales invoice object
salesInvoice.BatchKey = batchKey;
// Create a sales invoice line to specify the invoiced item
salesInvoiceLine = new SalesInvoiceLine();
// Create an item key
invoiceItem = new ItemKey();
invoiceItem.Id = "ADI123";
// Set the item key property of the sales invoice line object
salesInvoiceLine.ItemKey = invoiceItem;
// Create a sales invoice quatity object
invoiceCount = new Quantity();
invoiceCount.Value = 2;
// Set the quantity of the sales invoice line object
salesInvoiceLine.Quantity = invoiceCount;
salesInvoiceLine.WarehouseKey = new WarehouseKey { Id = "NORTH" };
// Create an array of sales invoice lines
// Initialize the array with the sales invoice line object
SalesInvoiceLine[] invoiceLines = { salesInvoiceLine };
// Add the sales invoice line array to the sales line object
salesInvoice.Lines = invoiceLines;
//salesInvoice.LineTotalAmount = new MoneyAmount { Value = 399.96M };
salesInvoice.DepositAmount = new MoneyAmount { Value = 399.96M };
salesInvoice.PaymentAmount = new MoneyAmount { Value = 399.96M };
// Get the create policy for the sales invoice object
salesInvoiceCreatePolicy = wsDynamicsGP.GetPolicyByOperation("CreateSalesInvoice", context);
// Create the sales invoice
wsDynamicsGP.CreateSalesInvoice(salesInvoice, context, salesInvoiceCreatePolicy);
}

Answer 1

I had to create a customer and set the credit limit to unlimited.
//assign unlimited class
CustomerCreditLimit cc = new CustomerCreditLimit();
cc.Item = CreditLimitSpecialAmount.UnlimitedCredit;
customer.CreditLimit = cc;
My blog post has more details on the code:
http://www.jmawebtechnologies.com/company-blog/may-2013/appying-payments-to-sales-invoices-and-sales-order