The initial setup is not that difficult if you implement it one module at a time. For example, you could first implement the inventory model and then the purchase model or sales model.

I recall that the initial setup had some complexity. We failed in one implementation and we succeeded in another one in 2015. We hired a professional consulting company to implement for us.

The initial setup is moderately complicated but not too difficult. Deployment generally takes several months, depending on the size of the company. We are a large company and have a team of 10 that deal with maintenance.

The installation takes one week.

To have a very rapid proof of concept would take two or three weeks, it's pretty straightforward. For the deployment, I was assisted by a system administrator who was also trained and skillful with administrative set up. It was the two of us with an external consultant. 

The deployment was a big project, so the initial deployment took a long time to roll out as per our first blueprint. It took almost a year and a half. There were several issues we faced in the first year and we continued to have some trouble for the first couple of years mainly due to a skill shortage.  We gradually gained some skills and experience on the product and things became better as time went on.

It depends on the area we're building the data models. Some are easier than others. For some setups, we can use the straightforward BI content and take advantage of the templates provided.

The setup needs skilled resources in SAP BW. A lack of trained resources can create serious problems. We had an implementation partner which did the initial setup.

The initial technical setup was complex. There were a lot of requirements for installing and setup the system. SAP wanted to install it on their own and it failed several times. At the end they solved it and we could start.