Installation and Upgrade > Windchill ESI > Installing and Configuring Windchill ESI in an SAP Environment > Object Numbering > Object Numbering and Attribute Field Length Differences
  
Object Numbering and Attribute Field Length Differences
The minimum and maximum lengths, as well as the character makeup of object numbers in Windchill versus SAP, differ. These differences may cause failures or erroneous results when publishing objects from Windchill PDMLink to SAP. The differences can be characterized for each object type (Parts, BOMs, Documents, Process Plans, Sequences, Operations, Process Materials, Equipment, CNs) handled by Windchill ESI.
WindchillObject Type
GUI and Database Out of the Box Maximum Field Length
GUI and Database Out of the Box Typical Field Length
Parts
40 characters
10 characters - all numeric
Documents
32 characters
10 characters - all numeric
Change Notices
32 characters
5 characters - all numeric
Process Plans
40 characters
8 characters
Sequences
40 characters
6 characters
Tooling
40 characters
18 characters
Process Materials
40 characters
18 characters
Operations
No limit
4 characters
Control Characteristics
40 characters
10 characters
* 
For object types other than Operations, the applicable field in the above table is Number. For Operations however, it is Label.