iOS Question Why always need to recreate certificate and provisioning profile?

Sending data to remote compiler. Error
Out: Build settings from command line:
ARCHS = armv7
CODE_SIGN_IDENTITY = iPhone
CONFIGURATION_BUILD_DIR = /Users/<user id>/Documents/Mac Host/B4iBuildServer/UploadedProjects/<user id>/Payload
OTHER_CODE_SIGN_FLAGS = --keychain <user id>
PRODUCT_NAME = Testing321
PROVISIONING_PROFILE = 2f45f299-ed5c-4cef-8c34-0577eb8b3d6d

=== BUILD TARGET B4iProject OF PROJECT B4iProject WITH CONFIGURATION Release ===

Check dependencies
No certificate matching 'iPhone': Select a different signing certificate for CODE_SIGN_IDENTITY, a team that matches your selected certificate, or switch to automatic provisioning.
Code signing is required for product type 'Application' in SDK 'iOS 10.3'


Error: ** BUILD FAILED **


The following build commands failed:
Check dependencies
(1 failure)

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