Why can't I update the organization of an invoice?

Description of the issue

You have generated an invoice for a project and have also posted it, which means it must have been sent to your accounting software if integrated. This invoice cannot be changed anymore. People in your organization might have exported this data from Kompass or your accounting software and based their reports, analysis, and strategic decisions on that invoice.

However, in this case, you are facing this difficulty.

Kompass states that there is a different client associated with this invoice. What happened here is that the billing organization for this project was changed. This is permissible and can occur at times. However, invoices raised for the previous billing client should not be altered, regardless of any subsequent changes to the billing organizations.

How to address the issue

Actually, you cannot and should not address this issue. As mentioned earlier, these invoices are set in stone and must not be changed. The only way out of this is to void the posted invoices and raise them again under the new billing organization. Attempting to change the client of an already raised invoice can potentially cause multiple issues with your data.