This is the meaning of loan_transaction_codes.option_flags :
RECALC_PAYMENT = 1
RE_AMORTIZE_LOAN_PAYMENT = 2
FORCE_AMORT_SCHEDULE_ADJ = 4
DISABLE_TRANS_CODE_FROM_BATCH_FILE = 8
DISABLE_TRANS_CODE_FROM_MANUAL_ENTRY = 16
DISABLE_TRANS_CODE_FROM_RECURRING_TRANS = 32
DISABLE_TRANS_CODE_FROM_LATE_LOAN_EVENT = 64
DISABLE_TRANS_FROM_FURTHER_USE = 128
ENABLE_USE_IN_NSF = 256
DISABLE_FLOW_TO_SHADOW = 512
DISALLOW_AMORT_SCHEDULE_ADJ = 1024
EXCLUDE_FROM_AMORT_SCHE = 2048
IGNORE_CREDIT_LIMIT = 4096
REPORT_AS_CHARGE_OFF_TO_CREDIT_BUREAU = 8192
ADD_AMORT_OF_TRANS_TO_PAYMENT = 16384
INCLUDE_IN_LOAN_AGING = 32768
INCLUDE_IN_APR_CALC = 65536
EXCLUDE_AMOUNT_IN_RESCISSION = 131072
INCLUDE_BILLING_IN_CREDIT_BUREAU = 262144
OMIT_DATE_OF_LAST_PAYMENT_IN_CREDIT_BUREAU = 524288
ORIGINATION_FEE_GILA = 1048576
FACE_VALUE_GILA=2097152
TRIGGER_IRS_EVENT_CODE=4194304