"has been initially set" is correct and usable in written English.
You can use it to describe something that was done at the beginning of a process or timeline. For example: "The release date for the new phone has been initially set for August 15th."
The study was conducted on a game ranch where the density of the indigenous population of impalas had been initially set high through introduction of animals to meet harvesting objectives.
The 500-gene set, which has been initially used to define the five to six breast cancer molecular subtypes [ 2- 4], consisted of genes that had a significantly greater variation in expression between different tumours than between paired samples from the same tumour.
Nevertheless, Weyl seems to have been initially attracted to set theory at least in the axiomatic formulation Zermelo provided for it in 1908.
Critics, including the outspoken MP Ali Motahari, have warned that the disqualification of a candidate who had been initially qualified and then elected sets a dangerous precedent.
Young, 1 2-year-old set-asides have been initially considered to be too ephemeral to have any conservation value.
Zerocash is not entirely trustless; it has to be initially set up by a trusted entity.
Through devious political machinations, the hero of the story, Mordechai, and his cousin Esther, succeed in having the Jews spared from a royal mandate that is initially set to have them killed.
Managers are trying to accommodate players playing others sports and it is not always easy to give everyone a game so Oban Lorne have just started a team this year that was initially set up to give players who were not getting a game for Celtic or Camanachd a chance to play.
According to a press release from Disney and DreamWorks, "Robopacalypse" -- which had Chris Hemsworth, Anne Hathaway and Ben Whishaw attached to star -- was initially set for release on April 25 , 2014
