Regardless of a player's iconic stature, maintaining squad discipline during major international campaigns remains an absolute mandate for national federations.

It is on this note that Portugal captain Cristiano Ronaldo has been handed a 30-day ban and fined €255 ($285) over his dispute with manager Jorge Jesus earlier this month.

The 41-year-old was found to have intentionally contravened federation regulations after he abruptly left the squad's Copenhagen base prior to their UEFA Nations League clash with Denmark.

He submitted himself to receive punitive action from the Portuguese Football Federation (FPF) in a statement released shortly after the events weeks ago.

Portuguese FA confirms Cristiano Ronaldo’s 30-day suspension

The Portuguese Football Federation's non-professional disciplinary council formally issued its verdict in a detailed 28-page ruling, fining Cristiano Ronaldo €255 ($285.83) and imposing a 30-day suspension.

The investigation stemmed from an incident on October 7, when Ronaldo departed Portugal's base in Copenhagen after accusing manager Jorge Jesus of a "breach of trust" and failing to honour agreements regarding his playing time.

The council initiated proceedings two days later on October 9 and determined that Ronaldo’s unauthorized exit constituted an intentional violation under Article 160(1) of the federation's disciplinary code.

The punishment represents a slap on the wrist for the superstar forward, as he could have received up to a six-month suspension.

The dispute between Ronaldo and Jesus erupted after the Al-Nassr man remained an unused substitute during Portugal's 2-1 victory over Norway in Oslo.

Cristiano Ronaldo’s apology and potential return for Portugal

After the final round of games of the international window, Ronaldo released a 2000-word letter on his social media, detailing what had taken place between him and Jesus and how things deteriorated.

As part of the letter, he tendered an apology to the fans and his teammates for his behaviour, accepting responsibility for his premature departure from the camp.

He has been backed by current and past teammates, with Luka Modric and Vitinha revealing their hopes for a swift resolution.

Despite the formal penalty, the resolution clears the air for Ronaldo's eventual return to the national setup.

With the 30-day suspension possibly running from early October alongside time served under his provisional ban, Ronaldo could complete his sanction before Portugal's next international window, potentially leaving him eligible for selection when Portugal face Denmark and Wales in November.

FPF President Pedro Proenca and head coach Jorge Jesus have both reiterated that the door remains open for Ronaldo's return to the national team, a sentiment shared by the forward.

Jesus' list for next month's international window will shed light on the nature of the forward's punishment, if it is a backdated one.