If you need to update Branded Calling short name/long name for a Pre-approved Bundle you can do so through the API .

Please follow the below steps to accomplish this :

(1) Change status of Branded Calling Trust bundle to “draft”

curl -X POST "https://trusthub.twilio.com/v1/TrustProducts/YOUR_TRUST_PRODUCT_SID" \
--data-urlencode "Status=draft" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN

(2) Find the UserEntity association by retrieving all of your Entity associations. This will give you a list of objects. You’ll need to choose the entity object_sid that starts with “ITXXXXXXXXXXXXX”

curl -X GET "https://trusthub.twilio.com/v1/CustomerProfiles/BUXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/EntityAssignments?PageSize=20" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN

(3) Remove the association between the old UserEntity and the Customer Profile

curl -X DELETE "https://trusthub.twilio.com/v1/CustomerProfiles/BUXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/EntityAssignments/BVXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN

(4) Create a new UserEntity

ATTRIBUTES=$(cat << EOF
{
"branded_calls_display_name": "NEW_DISPLAY NAME",
"branded_calls_long_display_name": "NEW_LONG DISPLAY NAME"
}
EOF
)
curl -X POST "https://trusthub.twilio.com/v1/EndUsers" \
--data-urlencode "Attributes=$ATTRIBUTES" \
--data-urlencode "FriendlyName=YOUR_END_USER_FRIENDLY_NAME" \
--data-urlencode "Type=branded_calls_information" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN

(5) Associate the new UserEntity with the Branded Calling Trust Product

curl -X POST "https://trusthub.twilio.com/v1/TrustProducts/YOUR_TRUST_PRODUCT_SID/EntityAssignments" \
--data-urlencode "ObjectSid=YOUR_END_USER_SID" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN

(6) Change status of Branded Calling Trust bundle to “pending-review”

curl -X POST "https://trusthub.twilio.com/v1/TrustProducts/YOUR_TRUST_PRODUCT_SID" \
--data-urlencode "Status=pending-review" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN