pkg file have permission issues copying Bom file.

Hi,

I've made a pkg installation file that usually works. However, for some setups I gets the following failure after postinstall finish (return 0)

2023-01-12 10:52:00-08 ESXBigSurVM-5 package_script_service[815]: Responsibility set back to self.
2023-01-12 10:52:00-08 ESXBigSurVM-5 installd[781]: PackageKit: Writing receipt for com.myprod.mycomp to /
2023-01-12 10:52:00-08 ESXBigSurVM-5 install_monitor[814]: Re-included: /Applications, /Library, /System, /bin, /private, /sbin, /usr
2023-01-12 10:52:01-08 ESXBigSurVM-5 installd[781]: PackageKit: releasing backupd
2023-01-12 10:52:01-08 ESXBigSurVM-5 installd[781]: PackageKit: allow user idle system sleep
2023-01-12 10:52:01-08 ESXBigSurVM-5 installd[781]: PackageKit: Cleared responsibility for install from 773.
2023-01-12 10:52:01-08 ESXBigSurVM-5 installd[781]: PackageKit: Cleared permissions on Installer.app
2023-01-12 10:52:01-08 ESXBigSurVM-5 installd[781]: PackageKit: Install Failed: Error Domain=NSCocoaErrorDomain Code=513 "You don't have permission to save the file "com.myprod.mycomp.bom" in the folder "receipts"." UserInfo={NSFilePath=/var/db/receipts/com.myprod.mycomp.bom, NSUnderlyingError=0x7f92fe515760 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}} {
            NSFilePath = "/var/db/receipts/com.myprod.mycomp.bom";
            NSUnderlyingError = "Error Domain=NSPOSIXErrorDomain Code=1 \"Operation not permitted\"";
        }
2023-01-12 10:52:01-08 ESXBigSurVM-5 installd[781]: PackageKit: Running idle tasks

I've used the installer command with sudo, but i'm still getting the permissions issue ...

sudo /usr/sbin/installer -pkg /path/to/my/file.pkg -target / 

Any idea why this is happening only in some setups (usually VMs running BigSur) ? and how could i prevent it ?