PAKET_TOO_BIG error after increasing the PACKET SIZE IN DTP

Dear All,

I am facing one problem ,while transferring the data to ODS ,I have maintain one End routine between ODS and PSA .the end routine compare the refreance doc on each line and and put DEBTORS in each row

For example

DATA IN PSA

Doc Number      Customer      Ref Doc

100000                100023         555555

100001                  ---------         555555

100002                  -------           555555

After END routine

Doc Number      Customer      Ref Doc

100000                100023         555555

100001                100023         555555

100002                100023         555555

Now My problem is that ,somtime Document number 100001 and 100002 is coming in different packages so the conversion will not happen,

So i increased the size to 4000000 as the data in PSA is 3600000 but now following error come

Short text of error message:

Unexpected program status

Long text of error message:

Technical information about the message:

Message class....... "RSBK"

Number.............. 899

Variable 1.......... "PAKET_TOO_BIG"

Variable 2.......... " "

Variable 3.......... " "

Variable 4.......... " "