ManageMapServerCacheTiles ERROR 001431: Invalid geometry found after projecting to service's spatial reference

[ColForbin]

I have a script that recreates the map server cache tiles that uses a shape file for the area of interest.  I am getting this error, even though both shape file and map service are in the same spatial reference:

ERROR 001431: Invalid geometry found after projecting to service's spatial reference

Here's the script:

arcpy.SignInToPortal(portal_url, "user name", "password")
mapserviceURL = r"url to map service/MapServer"
scales = [120000, 60000, 30000, 15000, 7500, 3750, 1875, 938, 469, 235]
numOfCachingServiceInstances = 3
updateMode = "RECREATE_ALL_TILES"
areaOfInterest = "path to my shapefile.shp"
waitForJobCompletion = "WAIT"
updateExtents = ""
result = arcpy.ManageMapServerCacheTiles_server(mapserviceURL, scales, updateMode, numOfCachingServiceInstances, areaOfInterest, updateExtents, waitForJobCompletion)

 The script runs and cache tiles are recreated if I use coordinates for the updateExtents.  Any ideas why this will not work with a shapefile area of interest?

[TonyAlmeida]

error indicates that the shapefile contains invalid geometries that cannot be accurately projected into the spatial reference of the map service.

Verify the map service spatial reference.

service_spatial_ref = arcpy.SpatialReference("url to map service/MapServer")
print(service_spatial_ref.name)

 Project the service to ensure there are no discrepancies.

map_service_spatial_ref = arcpy.SpatialReference(102100)  # Example: Web Mercator (Auxiliary Sphere)
arcpy.Project_management(
    "path to my shapefile.shp",
    "path to reprojected_shapefile.shp",
    map_service_spatial_ref
)

repair the shapefile.

arcpy.RepairGeometry_management("path to reprojected_shapefile.shp")

[ColForbin]

I recreated the shapefile (not a copy) with new geometry and same spatialRef as the cache service  still get same error, which seems odd.  I'll try your script and report back.  Thanks