Hello @Rafi Trad ,
Welcome to the MS Q&A platform.
It seems like a permission issue.
To create an Azure Synapse workspace, a user must have Azure Contributor role and User Access Administrator permissions, or the Owner role in the subscription.
As per the error message, you will need to work with your cloud solution provider to get the correct level of access. Please look into this document explained about how to manage subscriptions and resources under the Azure plan
I hope this helps.