What qualities (soft and hard skills) should a client/product owner have for effective interaction?

For effective interaction with the team, the client or product owner should possess the following qualities:

Soft skills:

• Good communication skills — the ability to clearly and understandably articulate requirements and expectations.
• Openness to dialogue and feedback — willingness to discuss and adjust tasks.
• Prioritization — the ability to rank tasks by importance and urgency.
• Decisiveness — the ability to make timely decisions to advance the project.
• Empathy and understanding of the team's technical constraints.

Hard skills:

• Knowledge of the subject area — understanding business goals and processes.
• Skills in using requirement and task management tools (e.g., Jira, Confluence).
• Basic understanding of technologies to evaluate technical proposals and constraints.
• Experience in formalizing requirements and writing user stories.

Having these qualities helps the client effectively interact with analysts, developers, and other project participants, ensuring transparency and quality of the final product.