/**
* Load Specific Document Details
*
* @return error message or null
*/
@Override
protected String loadDocumentDetails() {
MBankStatement bs = (MBankStatement) getPO();
setDateDoc(bs.getStatementDate());
setDateAcct(bs.getStatementDate()); // Overwritten on Line Level
setC_BP_BankAccount_ID(bs.getC_BP_BankAccount_ID());
// Amounts
setAmount(AMTTYPE_Gross, bs.getStatementDifference());
// Set Bank Account Info (Currency)
final I_C_BP_BankAccount ba = getC_BP_BankAccount(); // shall not be null
setC_Currency_ID(ba.getC_Currency_ID());
// Contained Objects
p_lines = loadLines(bs);
log.fine("Lines=" + p_lines.length);
return null;
} // loadDocumentDetails
