Difference in number of cycles

We are purchasing a product having monthly cycle for 90 Days, but the behavior of the number of cycles in the output is different for different accounts.

Expected behavior: both the output flists should have the same number of cycles.

Please find below the input and output flist for the same scenario:

1. Input flist, 90 days as input:

op_minacs_cust_purchase_product input flist

0 PIN_FLD_POID           POID [0] 0.0.0.1 /account 11369196 0

# number of field entries allocated 20, used 4

0 PIN_FLD_PROGRAM_NAME    STR [0] "Barcelona OM Integration"

0 PIN_FLD_END_T        TSTAMP [0] (1509408000) Mon Oct 30 20:00:00 2017

0 PIN_FLD_DEAL_INFO    SUBSTRUCT [0] allocated 20, used 5

1     PIN_FLD_PRODUCTS      ARRAY [0] allocated 20, used 12