BankAccountAdd_API cannot be executed with the user credentials, an exception below is returned:
"No access rights granted to method"
even though the user has all the privileges (e.g. admin).
The issue is caused by the bug with id #PBA-66134 ("BankAccountAdd_API fails: "No access rights granted to method"").
Until the bug is fixed, it is possible to apply a workaround :
add the line to /usr/local/bm/conf/BM.methods.list
BM BankAccount BankAccountAdd_API PAYMENT_METHODS_CREATE_MODIFY
A workaround described is to be reapplied after each BA update installation (until the bug is fixed)