To use engineering change management, the data records in the R/3 component Product Safety can have different validity periods.

• Material
• Dangerous goods regulation (defined for a substance of substance category LS_UN_SUB (UN listed substance))
• Classification key (defined for a substance of substance category DG_CL_SUB (dangerous goods classification))
• Real substance (to which material and classification key are allocated)

If the dangerous goods master is to be filled with data with several validity periods, each valid from or valid to date causes the resulting data record to be split in the dangerous goods master.

If you use change numbers in the R/3 substance database, and want to transfer the data to the dangerous goods master, you must have set the Active indicator for the corresponding change numbers for the following object types:

• Substances

• Phrases

• Dangerous goods master

The R/3 System takes changes into account that

• Were made with change numbers
• Were made without change numbers

Changes that were made with change numbers cause data records to be split (data record change).

Changes that were made without change numbers refer to the attributes within a data record. Attribute changes are logged by the R/3 System in change documents. The date of the last change also provides information about a change that has actually been made.

For data record changes, the R/3 System determines the validity period of the resulting data record in the dangerous goods master as follows:

The R/3 System determines the valid-from date independent of the valid-to date.

The data record is only transferred to the dangerous goods master if a unique logical key can be allocated from material and dangerous goods regulation. The determination of the new validity period with which the data record is created in the dangerous goods master is thus dependent on whether

• The logical key must be newly constructed from the data delivered for the dangerous goods master data record In this case, the data record can only be created in the dangerous goods master for the time period for which both the material and the dangerous goods regulation are valid.

• The logical key delivered for the material and dangerous goods regulation already exists in the dangerous goods master In this case, the valid-from or valid-to date for the material delivered and the dangerous goods regulation delivered causes another split in the data record for which the logical key already exists in the dangerous goods master.