TCM - HTTP Error 401 when trying to sync users from Enterprise ERP to Content Manager

Tyler Content Manager Server Connection Warning
Tyler Content Manager web service call encountered:
HTTP Error 401 () Contact Administrator to check TCM Server responsiveness.
(This message will only be displayed once per Munis sessions)

• Munis
• Enterprise ERP
• Content Manager
• Tyler Content Manager
• TCM
• HTTP Error
• 401
• Submit
• Retrieve
• tcmadmin
• sync users

User gets HTTP Error 401 when trying to sync users from Enterprise ERP to Content Manager.

The password is likely incorrect or need to be reset.

• Sites previously would sync users with the tcmadmin account, however, best practice is to use tylereerpservice which is a unique account that should be used to sync users.
• tcmadmin may still auto-populate as the id but can be re-entered or overwritten as tylereerpservice.
• Verify that tylereerpservice exists in the Content Manager Full Client. (see How to Access and Launch the TCM Full Client)
• If the account exists, an Admin can reset the password in the Full Client to your choosing making sure not to use special characters or to exceed 16 characters. (see: How to Unlock or Change User's TCM Full Client Account)
• If the account does not exist an Admin will need to create this account. (see: Creating tylereerpservice user ID in Content Manager)
• We do not recommend changing or updating other webservice or service account id's without the assistance of Tyler Support, such as account id's used for forms, cashiering etc.

Also see: How to sync users and TCM Permissions from Munis to TCM

How to Reset Master Password and Rebuild TCM Caches