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TPM34 - Define Account Assignment Reference Determination (External Accounts)

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In this Customizing activity, you define rules for the automatic determination of account assignment references for external account positions in the parallel valuation areas.

To make postings to a position, you have to assign account assignment references to each clearing account position.

The account assignment references for clearing account positions are determined when you first post a payment for the clearing position using the function Post External Account Flows[transaction TREA_POST_FLOWS]. The account assignment reference is determined according to the rules defined in this IMG activity.

See also: Define Account Assignment References

You have defined account assignment references in the IMG activity Define Account Assignment References.

The sample Customizing settings contain examples of rules for determining account assignment references automatically for clearing account positions.

Note that the valuation area can also be used as an optional parameter for controlling account determination. It therefore does not necessarily have to be included when determining the account assignment reference.

1. Call up the Customizing activity. The Determination of Account Assignment Reference: Change Strategyscreen appears.

In this screen, you can enter rules for determining the account assignment reference for the clearing account positions.

The rule can involve various steps. The system follows these steps in order until it is able to determine an account assignment reference for the position in question.

A step can consist of a derivation rule or an assignment:

• Step type derivation rule

In a derivation rule, you can choose various source fields (such as the currency or product type), the values of which are used as a basis for assigning the account assignment reference (target field). You can use a derivation rule dependent on the fulfillment of a condition.

• Step type assignment

In the case of an assignment, you specify the value to be written to the target field (account assignment reference). You can also make an assignment dependent on the fulfillment of a condition.

SAP recommends that you first define the more specific derivation rules (such as those tied to conditions), and then make the less specific settings. The last entry should be an assignment that takes effect if the system is unable to allocate an account assignment reference on the basis of the preceding rules. This ensures that an account assignment reference is determined each time.

Note:

If no account assignment reference can be determined, the update to Accounting is canceled.

1. Defining a derivation rule
1. Choose the Create Step pushbutton. In the dialog box, select Derivation Rule and confirm your entry.
2. Enter a text for the derivation rule.
3. On the Definitiontab, enter the fields that you want to use to control the account assignment reference allocation in the Source Fields section. In the Target Fields section, choose the field AA_REF for the account assignment reference.

1. On the Conditionstab page, you can enter conditions dictating when the derivation rule is applied.

Example:

If you want a derivation rule to apply to all product categories except for one, select the field PRODUCT_CATEGORY from the possible entries for the Namefield. In the operator field Op., enter the symbol <> for not equal to. In the Valuefield, you then enter the relevant product category.

1. The settings on the Attributestab are not supported.
2. You now have to assign the account assignment references to the values of the source fields. To do this, choose the Maintain Rule Values pushbutton.

In the table that follows, you can assign account assignment references to combinations of source field values. The first column contains the first source field that you selected, the second column the second source field, and so on. The last column contains the target field Account Assignment Reference. You can then select the relevant values from the possible entries (input help).

Example from the Loans Management area:

Source fields:Product Category and Loan Term

Target field: Account Assignment Reference

The table then appears as follows:

Source field 1	Source field 2	Target field
Prod. cat.	Loan term	Acct assignment ref.
300	1	40002
300	2	40001
300	3	40001
300	4	40001
300	5	40001
300	6	40001
300	9	40001
310	1	40002
310
...

1. Define assignment
1. Choose the Create Steppushbutton. Select Assignmentin the dialog box and confirm your entry.
2. Enter a text for the assignment.
3. On the Definitiontab, you have two options: You can either choose a source field, the value of which is then written to the target field "account assignment" [in this case, all the values of the source field must correspond to short keys for account assignment references], or enter the short key for the account assignment reference directly in the Constantfield.
4. On the Conditiontab, you can make the assignment dependent on the fulfillment of a condition.
5. Select AA_REF account assignment reference as the target field.
2. Changing the order of the steps

You can change the order of the steps after they have been defined. To do this, proceed as follows:

1. Select the step that you want to move.
2. Position the cursor beneath the target position.
3. Choose Move.

1

The following settings have been defined:

1. Derivation rule 1: Account assignment reference for fixed-interest securities issued by German institutions

Source field: Country/region of origin: DE

Target field: Account assignment reference: REFERENCE1

Condition: Product category = 040

1. Derivation rule 2: Account assignment reference for fixed-interest securities

Source field: Product category: 040

Target field: Account assignment reference: REFERENCE2

1. Assignment: For all other product categories

Constant: REFERENCE3

Target field: Account assignment reference

The system first checks whether an account assignment reference can be determined using derivation rule 1. If this is not possible, it checks whether derivation rule 2 can be applied. If the criteria for rule 2 are also not fulfilled (this would be the case for a stock purchase, for example), the account assignment reference defined in the assignment step is used. (If you enter an account assignment reference in the Constantfield for an assignment without attaching any conditions, this account assignment reference is used for all positions not covered by the preceding derivation rules).

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