HI Firdosh,
After a bit of digging, you are asking about a customization (BRD 767) and not something in the standard Alliance product which explains my uncertainty regarding this value.
It appears your company’s code has an option to have an accounting indicator added to the demands as a customization and based on the error message, it sounds like one of your demands (material, activity or expense) does not have this code populated in this order.
Similar to the above, please review your order’s demands to see where the accounting indicator is not populated.
Hope this helps you find what you are looking for but please contact Alliance EMEA support if you need further help.