Setting Number of Series
 Select Financials > Master Data.General LedgerProcessing.
 Click Transaction Types (tfgld0511m000) session

Specify the digit to define the length of the series in the Number of Digit for
the Series field in Document Handling group on General tab. The number series
cannot be less than the specified digit.
Note: The Number of Digit for Series can only be a value between 1 to 4.
 Specify the Default Series. The number series will start with this number. This must be equal to or greater than the digit specified in the Number of Digit for the Series field.