Error : {"message":"The Lookup function call failed because the specified lookup field does not exists for the data extension\r\n  Data Extension: CLOUDPAGES_TECHNICAL_INFO\r\n  Invalid Field Name: CONTENT_lu_be\r\n  Function Call: Lookup('CLOUDPAGES_TECHNICAL_INFO', CONCAT('CONTENT_', @lang, '_', @country), 'PAGE_NAME', 'ALL', 'BLOCK_LOCATION', 'HEAD', 'BLOCK_NAME', 'GTM', 'BRAND', @brand)\r\n  Message Context: HTML","description":"ExactTarget.OMM.InvalidFunctionParameterException: The Lookup function call failed because the specified lookup field does not exists for the data extension\r\n  Data Extension: CLOUDPAGES_TECHNICAL_INFO\r\n  Invalid Field Name: CONTENT_lu_be\r\n  Function Call: Lookup('CLOUDPAGES_TECHNICAL_INFO', CONCAT('CONTENT_', @lang, '_', @country), 'PAGE_NAME', 'ALL', 'BLOCK_LOCATION', 'HEAD', 'BLOCK_NAME', 'GTM', 'BRAND', @brand)\r\n  Message Context: HTML\r\n  Error Code: OMM_FUNC_EXEC_ERROR\r\n - from Jint --> \r\n\r\n --- inner exception 1---\r\n\r\nSystem.ArgumentException: Column 'CONTENT_lu_be' does not belong to table . - from System.Data\r\n\r\n\r\n\r\n"}