Examples for Determining the Scope of Supersession Chains 

Position of the input product in the supersession chain

Input product is the first product in the supersession chain

The following settings are defined in the master data for interchangeability:

Predecessor Product	Successor Product	Direction of Interchangeability
P1	P2	Forwards
P2	P3	Forwards

P1 is forward interchangeable with P2; and P2 is forward interchangeable with P3.

The input product is P1.

Since no predecessor product is defined for P1, the system determines the following supersession chain: P1 -> P2 -> P3.

P1 can be substituted by P2 and P3.

Input product is not the first product in the supersession chain

Products fully interchangeable

The following settings are defined in the master data for interchangeability:

Predecessor Product	Successor Product	Direction of Interchangeability
P1	P2	Full
P2	P3	Full

Both P1 and P2 and P2 and P3 are fully interchangeable.

The input product is P2.

The system determines the following supersession chain: P1 <-> P2 <-> P3.

P1 can be substituted by P2 and P3. P2 can be substituted by P1 and P3. P3 can be substituted by P2.

Previous product only forward interchangeable

The following settings are defined in the master data for interchangeability:

Predecessor Product	Successor Product	Direction of Interchangeability
P1	P2	Forwards
P2	P3	Full

P1 is only forward interchangeable with P2. P2 is fully interchangeable with P3.

The input product is P2.

The system determines the following supersession chain: P2 <-> P3.

P2 can be substituted by P3; and P3 can be substituted by P2.

Filter defined for replacement type

In integrated rule maintenance, a filter is defined for the replacement type Multilevel Substitution.

The following settings are defined in the master data for interchangeability:

Predecessor Product	Successor Product	Replacement Type
P1	P2	One-to-one substitution
P2	P3 and P4	Multilevel substitution

P1 is substituted by P2 and P2 is substituted by a group consisting of P3 and P4.

The input product is P1.

The system determines the product substitution P1 -> P2. The substitution of P2 by P3 and P4 is not taken into account because the system excludes this substitution due to the filter.

One-to-many substitution is part of the supersession chain

The following settings are defined in the master data for interchangeability:

Predecessor Product	Successor Product
P1	P2 (P2.1 and P2.2)
P2.1	P2.1a

P1 is substituted by P2, which consists of the components P2.1 and P2.2. The component P2.1 is substituted by P2.1a.

The input product is P1.

The system determines the product substitution P1 -> P2 (P2.1 and P2.2). The substitution of P2.1 with P2.1a is not taken into account.