How to create customers and customer sites with manual numbering?

Summary:

According to the document How to control the Party, Customer Account and Party Site Numbering ? (Doc ID 1992007.1):

1. There are 3 Profile Options for determining Party, Customer Account and Party Site numbering behavior, respectively:

a. HZ_GENERATE_PARTY_NUMBER

b. HZ_GENERATE_CUSTOMER_NUMBER

c. HZ_GENERATE_PARTY_SITE_NUMB.

2. For each if these 3 profile options, the following values are available:

a. Auto numbering, update not allowed: The number will be automatically generated and will not be editable.

b. Auto numbering, update allowed: The number will be automatically generated and will be editable.

c. No auto numbering, update not allowed: The number will not be automatically generated and will not be editable.