How to join ra_customer_trx_all (AR Header Table) with projects tables to get the project Number

Summary:

We are Trying to get the 'Project number' field in the 'Manage Transactions' Header Screen inside 'Billable' in Receivables. We are unable to find direct join to link ra_customer_trx_all (AR Header Table) with projects tables to bring the project number. Is there any other way to get the project number which is populated in the Manage Transactions Header Section.

Please check the Attached Screenshots from where we need the Project Number.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):