Salesforce identifies Sales Agreements being enabled as a prerequisite for creating the Advanced Account Forecasting Analytics for Manufacturing application.
The documented prerequisites for the analytics template include the appropriate Manufacturing analytics license and Sales Agreements functionality enabled in the organization. Salesforce's release documentation specifically states that an administrator creating the Advanced Account Forecasting Analytics for Manufacturing template must have the Manufacturing analytics entitlement and Sales Agreements enabled.
This requirement exists because the analytical data model and dashboards are built around Manufacturing Cloud's forecasting and commercial structures, including planned and actual business information associated with Sales Agreements.
Standard Account Forecasting is a separate forecasting feature and does not have to be enabled merely because Advanced Account Forecasting Analytics is being used. Salesforce treats Account Forecasting and Advanced Account Forecasting as distinct forecasting solutions.
Similarly, Order functionality is an important source of forecast and actual information, but the absence of Orders as a configured business process is not the prerequisite represented by this question.
Therefore, the administrator must confirm that Sales Agreements is enabled before attempting to create and share the Advanced Account Forecasting analytics application.
Study Guide references/topics: Configure and Build — Advanced Account Forecasting Analytics; Manufacturing Intelligence; Sales Agreements Prerequisites; Analytics Application Setup.