Change Coordinate System of the Project

[TahaRabeaElqalamoshy]

hi guys

i have a project was created with ( WGS 1984 ) Coordinate System

and have a lot of things

and i want to change the Coordinate system to ( Purple Belt ) 

is this changing will change the position of the data entire the project?

and 

how can i change it ?

thanks very much

[DavidPike]

Is this a general ArcGIS Pro question rather than an SDK one? Also Purple Belt EPSG 22993?

[David_Brooks]

@TahaRabeaElqalamoshy you don't need to change the coordinate system of your layers to Purple Belt if you don't want to, just change the coordinate system of your data frame:

1. Right Mouse Click on your Map (data frame) and select Properties > Coordinate Systems.

2. Then in the search, type purple belt, and navigate to select the coordinate system.

3. Then select transformations and confirm you have a transformation applied.

All your WGS84 data will be reprojected on-the-fly into Purple Belt. 👍