I am using PayPal's Payflow pro API on a test account and no matter what, it tells me the field is incorrect. I am using PHP. This is the string being sent to them:
USER=xxx&VENDOR=xxx&PARTNER=PayPal&PWD=xxx&TENDER=C&ACTION=A&TRXTYPE=R&PROFILENAME=JerProfile&PAYPERIOD=MONT&START=12152012&TERM=0&ACCT=4012888888881881&AMT=123.45&&BUTTONSOURCE=PF-CCWizard
And the response says
Array
(
[RESULT] => 7
[RPREF] => R1853E1E07BF
[RESPMSG] => Field format error: Invalid or missing START/NEXTPAYMENTDATE field
)
And as you can see, I have specified a monthly pay period and the start date is in their format of mmddyyyy. Any help would be appreciated as this is driving me insane.