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Define Screen Layout at Document Level

For all external

purchasing documents and purchase requisitions, you can specify the input attributes of fields by using field selection keys.

A field selection key determines whether a field is:

When the screen is assembled in the dialog transactions, for example, Change Purchase Order, certain field selection keys are combined.

Combination of field selection keys

When the screen is assembled, the dialog program combines up to six different field selection keys.

The successive combination of the field selection keys listed below according to the link rules determines which input characteristics the fields have in the document.

Two field selection keys are combined according to the link schema in the table below. The following key is used:

Link rules for field selection keys
Field selection key 2
+ . * -
Field selection key 1
+ + + * -
. + . * -
* * * * -
- - - - -

Example

When you change a purchase order, the following field selection keys are combined for the field Terms of payment :

The combination of field selection keys 1 and 2 results in this field being an optional field.

The combination of an optional field with field selection key 3, in which the field is a display field, results in a display field.

Field selection key

YOu should not delete the field selection keys listed below, which the dialog program uses for control purposes, otherwise the dialog may terminate during processing:

1. Field selection key: transaction
The field selection key that corresponds to the transaction code: for example, field selection key ME22 for the transaction "Change Purchase Order". For the Enjoy Purchase Order transactions (creating, changing, displaying), there is only field selection key ME21N.
2. Field selection key: activity type
Is set from the activity type as follows:
You should note that you can also add items in change mode (for example, transaction ME22). Field selection key AKTH would be used for this item.
3. Field selection key: purchasing document type
The field selection key that you have assigned to the document type for the purchasing document. For example, field selection key UBF is assigned to document type UB, which is used for stock transfer orders (within a company code). In this key, the fields Price and Price unit are suppressed.
4. Field selection key: item category/document category
This is determined from the item and document categories as follows: The first two characters consist of the letters 'PT', the third character of the item category (internal representation), and the fourth of the document category:
Accordingly, field selection key PT3F would be used for a subcontracting item in a purchase order.
5. Field selection key: purchase requisition
In addition to the available field selection keys, you can define a field selection key at function authorization level to influence the input characteristics of fields in the Enjoy Purchase Requisition.
You can use this field selection key to set up groups of users that have certain restrictions when editing purchase requisitions.

SAP Recommendation

SAP recommends that you accept the settings defined in the standard system. In this case, no action is required on your part.

Activities

1. Check the predefined input attributes.
2. Change the field input control facility in accordance with your requirements

If you create your own field selection keys you can enter these at the following points:

Further Notes

You cannot use the following fields as mandatory fields: