Characteristics for CDP and Block Planning 
You use the characteristics to describe requirements that the system is to consume with receipts in the same characteristics. You define the blocks with characteristics in block planning.
You can only use characteristics with the following data types for CDP:
Character format
Numeric format
Date format
Time format
The Currency Format data type and user-defined data types are not supported.
Generally, you create characteristic values for configuration and classification in the ERP system. The input check is also carried out here.
The following properties of a characteristic are not taken into account when creating characteristic values in SAP APO for CDP:
Restrictions
Authorization group
Default values
Interval values allowed (indicator is only set for characteristic requirements. If the indicator is not set, you can only create multiple values and no interval for characteristic requirements.)
Dependencies
Characteristic overwrites
No other value checks except allowed values (these value checks include value checks via check table, function module, catalog characteristic)
Value hierarchy
Reference to table field (reference characteristic)
Indicator for evaluation (settings Not Ready for Input, No Display, Display Allowed Values)
Settings for controlling unformatted entries
Restrictions to class type
Validity period
Note
Characteristic names cannot begin with SAP_ or LOBM for CDP. These namespaces are reserved for SAP and are used for special application cases.
For CDP, numeric characteristics can have up to 15 places, 3 of which must be decimal places. If you are using a different format, the data after the third decimal place will be lost.
Characteristic value assignments for the configuration and the batch classification only use single values. You can only use multiple-value characteristics for characteristic requirements (for example, for block basis definitions, rules in the PPM plan, or characteristic requirements from batch selection criteria). You can then specify multiple values for characteristic requirements for characteristics with character format. For numeric characteristics, you can also specify an interval in addition to multiple values.
Only use planning-relevant characteristics in SAP APO for CDP. Create user-specific organizational areas in the ERP system and specify these in the integration model to mark characteristics in the ERP system as planning-relevant. For more information, see Organizational Areas for Characteristics.