Hi Dennis,
please read the following note regarding SD_CUSTOMER_MAINTAIN_ALL:
1826993 - Function SD_CUSTOMER_MAINTAIN_ALL behaviour
If you use the Class CMD_EI_API you have to provide to CMD_EI_API the partner function you want to
store.
In your case, you have provided no partner function in the input
complex structure.
In clear, your report has to provide the partner functions you want to
maintain.
In order to easily find which are the mandatory partner functions
for an account group, you may look at class cmd_ei_api_check, method
get_mand_partner_functions.
This method can't be used directly, but at least it will provides you
with a code sample.
I hope I could help you to solve this issue:-)
Best regards,
Zsuzsanna