SAP assembly scrap allows you to plan for faulty or damaged assemblies.
Since no production process is perfect, some scrap is always produced. You may scrap cheaper items and rework costly items not meeting quality standards.

SAP Subcontracting involves sending components to a vendor to manufacture an assembly for you. The vendor returns the completed assembly, and during goods receipt GR, the components are issued from subcontract inventory. Subcontracting is a purchasing process with the manufacturing occurring at the vendor location.

There are three methods to distribute overhead costs to the cost of goods sold for the standard price as listed below:
You can either increase the planned activity price to include overhead, or create separate overhead activity types. Manufacturing orders are debited during activity confirmation, and production cost centers are credited.
SAP Material Ledger has two main functions:
In this blog, we'll discuss Actual Costing in detail:
Actual costing generates a material ledger document for all goods movements at standard price (preliminary valuation). At period-end, the actual price is calculated for each material based on the actual costs incurred during the period. The actual price is called the Periodic Unit Price PUP and can be used for the following two functions at period-end:

The three period-end options when you activate SAP Material Ledger are:
Here's more details of each option:
In SAP S/4HANA, materials are typically valuated using either Standard Price (S) or Moving Average Price (V). The appropriate price control depends on the type of material and how you want inventory price differences to be handled.
Read more: SAP Standard Price vs. Moving Average Price in S/4HANA

Purchase Price Variance (PPV) in SAP S/4HANA occurs when the actual procurement cost of a material differs from the price used to value the material. For materials using Standard Price (S), differences between the standard price and purchase order, goods receipt, or invoice receipt values can be posted to price difference accounts.
Analyzing PPV helps Purchasing identify the causes of procurement cost variances, including changes in supplier prices, purchase order prices, freight costs, exchange rates, and invoice prices. Assigning PPV to Purchasing also provides greater visibility into the materials and transactions driving those differences.
Read more: SAP Purchase Price Variance (PPV): Posting and Analysis in S/4HANA
Many companies operate in multiple regions and countries and must report on their fixed assets based on various legal and valuation frameworks.
SAP S/4HANA provides the tools and processes to fulfill these parallel valuation requirements. Some of these requirements can be technically challenging, such as when using different fiscal year variants (FY variants) in the various valuation frameworks.
Read more: Fiscal Year Variants in SAP S/4HANA Asset Accounting
Several colleagues have asked me questions about integration of MM and FI such as:
This blog explains the fundamentals of MM-FI account determination. Let's start with some configuration basics, including OBYC.

An internal order budget, or approved funds, is maintained at an overall or annual level.
You activate availability control to issue warning or error messages based on defined tolerances. Let's examine the internal order budget and availability control.