Umrah (ﻋﻤﺮﻩ) in linguistic is known as a pilgrimage, while in religious view agreed by most scholars, Umrah is Tawaf in Baitullah, and Saei between Safa and Marwah with ihram. (ref. Al-Mausu'ah al-Fiqhiyyah, 30/314) 
Allah (SWT) said:
وَأَتِمُّوا الْحَجَّ وَالْعُمْرَةَ لِلَّهِ
Meaning:"And perform the Hajj and Umrah for Allah's sake."
(Surah al-Baqarah: 196) 
Some scholars believe that the law of performing umrah is compulsory and obligatory once in a lifetime for those who are capable. This is according to the sect of Imam as-Syafie.
However, Hajj and Umrah are considered sunnah and to be performed repeatedly. This is because there are many advantages promised to anyone who performs the pilgrimage and umrah with sincerity and piety.
From Abu Hurairah R.A., The Messenger of Allah (ﷺ) said:
الْعُمْرَةُ إِلَى الْعُمْرَةِ كَفَّارَةٌ لِمَا بَيْنَهُمَا وَالْحَجُّ الْمَبْرُورُ لَيْسَ لَهُ جَزَاءٌ إِلاَّ الْجَنَّةُ
Meaning:“Umrah worship to the next umrah are the kaffarah (abolition of sin) between the two. And the pilgrimage has no recompense (for the culprit) but heaven." 
Narrated by Al-Bukhari (1773) and Muslim (1449)
The above hadith, clearly demonstrated that Hajj and Umrah are recognized as the extraordinary interventions in seeing Allah Almighty. This can be observed from the mentioned hadith. Prophet Muhammad (pbuh) had guaranteed a superb reward to anyone who has reached the highest point in playing out his journey. In like way to the people who play out the Umrah repeatedly, their minor sins will be annulled through the term of the Umrah revere. 
We at Tripfez hope that each of our practices will be accepted by Allah SWT and we pray that the Umrah congregation will be able to perform their Umrah peacefully and their worship will be blessed by Him.