R31804 Flex AAI 3220 business unit with F4102.SRP6

Hi To all
It is possible to flex AAI 3220 business unit using F4102.SRP6?

I was able to flex the rest of the aai but not his one

for example, AAI 3240 and 3260 are flexing, but not 3220

this is an example of an R31804 posting

Nº cuenta                         Importe    Tipo LM aux    LM auxiliar    AAI comming from
           1.3302.A1             9,97                           W    13026605      3120
         118.7119.A1          -9,98                           W    13026605      3260
         118.6899.B3             ,01                           W    13026605      3240
     CERCEDA.6499.B1    -,01                          W    13026605      3220
     CERCEDA.6899.B3    ,01                           W    13026605      3220

the last 2 lines should have get 118 instead of CERCEDA as business unit

any help appreciated

Thanks