The fishbone diagram was invented by Kaoru Ishikawa, an Engineering Professor from Japan. Initially, this fishbone diagram was used to carry out quality control, but along with the development of this diagram it is widely used to solve various problems in various companies.

A fishbone diagram, also known as a fishbone diagram, is a tool used to find out various kinds of possible problems that will occur, as well as the consequences that will be caused. In short, this diagram aims to find out and analyze the causes and effects of a problem.

The use of fishbone diagrams has the potential to solve problems at each layer to get to the root cause. This diagram is not only used to solve existing problems, but can also be used in the planning and design process to prevent problems from occurring.

Like its shape, the outline of this diagram resembles a fishbone. The head is usually filled with the main problem, while the fishbone framework which is divided into several parts describes the factors that cause the problem. In general, the causal factors in manufacturing companies consist of 6M which include:

1. Manpower (human resources / experts),

2. Method (Method / process),

3. Machine (machine / tool / technology used),

4. Material (Raw material / component material),

5. Measurement (Measurement of distance, volume, temperature, pressure, etc.).

Figure 1. Fishbone diagram (https://baronerocks.com/index.php/mnemonics/468-fishbone-diagram)

When you want to analyze a problem, the first step that must be done is to identify the main problem. Then analyze the possible causal factors based on the 6 categories above. Based on the possible causal factors that have been collected previously, identify and find what is the main causative factor. After finding the main factors, discuss with the team involved to find other supporting data and find the right solution.

If we relate it to the existing problems in the warehouse, the fishbone diagram can help with problems related to warehouse management. The benefits obtained are:

1. Identify possible problems that occur in the warehouse based on 6 main categories.

2. Help identify the causes of problems in the warehouse.

3. Facilitate workers in the warehouse in finding the best solution to solve the problem.

4. Facilitate the team in determining the best methods and tools to be used in warehouse management.

With this, the company can minimize common problems that occur in the warehouse. For example stock differences, ineffective warehouse layout, ineffective picking lines and other problems.