SAP PP – Scrap

Assembly Scrap
Material Master MRP1 > Assembly scrap (%)

Component Scrap
Material Master MRP4 > Component scrap (%)
BOM > Basic Data > Component scrap (%)

Operation Scrap
BOM > Basic Data > Operation scrap in %
Refers to component quantity
Routing > Operation Details > Scrap in %
Refers to assembly quantity

Net Indicator
BOM > Basic Data > Net ID
Ignores assembly scrap

Assembly scrap can be calculated from operation scrap using:
Total scrap quantity / final yield quantity * 100

Unit 8 Exercise 26
1 x R-B1## (assembly scrap = 12%)
1 x R-T1## (material master component scrap = 2%)
1 x R-T2## (material material component scrap = 3%; Net ID)
8 x R-T3## (material material component scrap = 7%; Net ID)
Operation 10 (routing scrap = 5%)
Operation 20 (routing scrap = 5%)

Production Order
R-B1##
Base quantity = 100
Scrap quantity = 100 * 12 / 100 = 12
Total quantity = 100 + 12 = 112

R-T1##
Base quantity = 112 * 1 = 112
Scrap quantity = 112 * 2 / 100 = 2.24
Total quantity = 112 + 2.24 = 114.24 = 115

R-T2##
Base quantity = 100 (Net ID ignores assembly scrap 12%) * 1 = 100
Scrap quantity = 100 * 3 / 100 = 3
Total quantity = 100 + 3 = 103

R-T3##
Base quantity = 100 (Net ID ignores assembly scrap 12%) * 8 = 800
Scrap quantity = 800 * 7 / 100 = 56
Total quantity = 856

Initial = 112
Operation 10 scrap = 112 * 5 / 100 = 5.6
Operation 10 yield = 112 – 5.6 = 106.4 = 106
Operation 20 scrap = 106.4 * 5 / 100 = 5.32
Operation 20 yield = 106.4 – 5.32 = 101.08 = 101
Assembly scrap % = (5.6 + 5.32) / 101.08 * 100 = 10.92 / 101.08 * 100 = 10.80%