Conga Composer supports queries that result in a maximum of 1,500 rows and no more than 5 Mb of total data.
Each Conga Composer solution has a combined row limit of 25,000.
The resulting dataset from a query that uses a GROUP BY clause may contain a maximum of 200 rows.
Salesforce doesn't support queries that attempt to group on a formula field.
Salesforce doesn't support queries of more than 10,000 characters.
Due to the complicated nature of SOQL statements, our support staff can only assist with the creation of SOQL statements generated through our tools, such as Conga Query Builder.