Beside GAAP principles and IFRS rules, which are necessary skills required for an ACCOUNTANT/FINANCE MANAGER to prove him/her abilities?

To prove your abilities certifications are most important therefore take some relevant certifications in your field to prove your abilities.

*"GAAP principles and IFRS rules" are not skills … they are regulations by which a Finance Dept. employee whole work shall be aligned to them.

Therefore, "Practical Knowledge of implementing GAAP principles and IFRS rules" is the required skill.

**Other skills starting from:

-Strong Analytical capabilities & professional eye for details,

-Utilizing Direct clear communication & reporting methods,

-Time management & meeting deadlines duly,

-Team-Working interdependence skills & … all other professional personal attitude skills. 

added to leadership abilities, he must have skils like :  attention to details, and to be able to find discrepancies when receiving reports from his staff just by a glance