document not picked in F110

Invoice doc: 5000000001

Due on: 12/30/2008

Baseline date: 11/10/2008

Payment terms: 50 days net due

Vendor master details:

Vendor: 241344

Payment method: E

Payment proposal Details:

Payment run on 12/29/2008 through F110 t-code

Parameters:

Identification:MTR1

Payment method: E

Vendor:1 to 99999999

Result : above invoice doc not picked

Second payment executed on same day 12/29/2008

Parameters:

MTR2

Payment method: C

Vendor: 1 to 99999999

Result: above invoice picked in proposal but not cleared giving error u201CPmnt methods for this run are not specified in master record or in itemu201D.

Again same executed on 30th but not picked but finally picked on 01/02/2009

My question is why document is not picked in MTR1 which has correct values.