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How to use the MDMFPD sub keyword in MailStream Plus.


 
How to use the MDMFPD sub keyword in MailStream Plus. 
The text for sub keyword MDMFPD got a little confusing in the 8.2.1 Reference Guide.
It is a 2-part subkeyword. The first part is for the affixed postage, and is 6 bytes long. Then there is a space, then the second field is a 1-byte field for the metered method.
Here is the correct layout from the 8.2.0 Reference Guide (and it will be correct again in the 8.3.0 Reference Guide.) 

MDMFPD length=8 Mail Facility pre-denominated postage. This two-part subkeyword, with one space between components, has the format: 
CCCCCC M 
6 bytes, 1-6, .MPU -1124 - CCCCCC 
1 byte, 8, .MPA-1103/.MPA- 1111/.MPU-1125 - M 

Below is the detailed description of both fields. 

6 MPU-1124 Mail.dat predenominated amount. 
Format: CCCCCC 
We recommend using the 9999.9 cents format (for example, 0012.3 = $0.123). 

1 MPA-1103 MPA-1111 MPU-1125 Mail.dat metered method. 
Format: M 
You cannot use different metering methods in the same mailing. Blank defaults to the payment method defined by the ALG PP parameter position 8. These options are available if the ALG PP parameter defines metered mail: 
--C   Correct postage metered. The predenominated amount is ignored. 
--L   Lowest postage metered. The predenominated amount is optional. It is used if specified. Leave it blank for the lowest postage rate to be used as the affixed rate. 
--M   Neither correct or lowest metered. The predenominated amount is required. 

These options are available if the ALG PP parameter defines Permit Imprint: 
--G   Government (using permit) 
--T    Periodicals pending (using permit) 
--P    Permit 
UPDATED:  April 18, 2017